This document summarizes the process undertaken by the Data Citation Synthesis Group to develop a consensus set of principles for data citation. The group was formed in response to multiple organizations developing similar sets of principles. It brought together 36 members from around 20 organizations to review 4 existing sets of data citation principles over 3 months of weekly meetings. They merged the principles into a single synthesis set of 8 high-level, simple principles for data citation. The principles address the importance of data citation, credit and attribution for data contributors, use of data citations as evidence, use of persistent and unique identifiers, access to data and metadata, ensuring identifier and metadata persistence beyond the data lifespan, accommodating versioning and granularity of data, and ensuring inter