Reference list encompasses the details of all the sources you have either cited, paraphrased or quoted in your dissertation. It would be listed in chronological order by the author following an alphabetical pattern by year of publication. In addition, it would be titled as reference having single line spacing with no indention. Following are the examples of the basic types of formats of the reference list:

1. Examples of APA
6th Edition References

2. Book
Examples of APA 6th Edition References
The format of the reference list of books integrates:
Surname (s), Initial (s). (Year of Publication). Title of Book in
Italics (Edition, if later than 1st edition). Place of Publication:
Name of Publisher.
For instance:
Baron, N.S. (2015). Words Onscreen: The fate of Reading in a
Digital World. New York: Oxford University Press.
Dahl, R. (1964). Charlie and the Chocolate Factory. United
States: Alfred A. Knopt, Inc.

3. Electronic journal article
Examples of APA 6th Edition References
If you have used an article from a journal, then it would comprise of
the following structure:
Surname(s), Initial(s). (Year of Publication). Title of Article. Title of
Journal in Italics, volume (part), page range. Retrieved (date) from
URL
For instance:
Ebied, M. M. A., & Rahman, S. A. A. (2015). The effect of interactive e-
book on students’ achievement at Najran University in computer in
education course, Journal of Education and Practice, 6(19). Retrieved
March 27, 2018, from https://files.eric.ed.gov/fulltext/EJ1079544.pdf
Al-Wadi, H. M. (2018). Attitudes towards Using English as a Medium
of Instruction for Professional Development. Us and Chinese:
English, 16(2), 77-87. Retrieved September 5, 2018 from,
http://www.davidpublisher.com/index.php/Home/Article/index?id=3499
1.html

4. Basic website
Examples of APA 6th Edition References
The pattern of a simple website is given below:
Author. (Year of Publication). Title of Website. Retrieved (date) from
URL
For instance:
Byars, M. N. (2015). Printed books versus digital books. Retrieved
September 8, 2018 from
https://digitalcommons.calpoly.edu/grcsp/141/
Javellana, J. C., Jover, G. M. S., & Perez, D. I. S. (2014). BOOKS VS
TABLETS: MODERN LEARNING TOOL OF ADDU FIRST YEAR CS
AND IT COLLEGE STUDENTS. Retrieved September 8, 2018 from
https://www.researchgate.net/profile/Jonathan_Javellana/publication/2
61357273_Books_Vs_Tablets_Modern_Learning_Tool_of_ADDU_Firs
t_Year_CS_and_IT_Students/links/00b7d533eab9246bbd000000.pdf

5. Newspaper articles
Examples of APA 6th Edition References
Some students also go for discovering relevant data in newspaper,
thus if you have used any source from newspaper, then it would have
the following pattern of a reference list:
Surname(s), Initial(s). (Year, Month Date of Publication). Title of
Article. Title of Newspaper in italics, Page number(s)
For instance:
Crouch, D. (2018, September 1). School girl’s strike captures
Sweden’s imagination. The Guardian, p. 32
Matthews, L. (2011, November 23). Foodbanks urge public to give
generously. Manawatu Standard, p. 4