APA (7th ed.) Citation

Primary Research Group. (2015). Survey of best practices in student retention, 2015 edition (2015 ed.). Primary Research Group.

Chicago Style (17th ed.) Citation

Primary Research Group. Survey of Best Practices in Student Retention, 2015 Edition. 2015 ed. [New York?]: Primary Research Group, 2015.

MLA (9th ed.) Citation

Primary Research Group. Survey of Best Practices in Student Retention, 2015 Edition. 2015 ed. Primary Research Group, 2015.