APA (7th ed.) Citation

ProQuest (Firm), Gaquin, D. A., & Ryan, M. M. (2016). County and city extra: Annual metro, city, and county data book (24th edition.). Bernan Press.

Chicago Style (17th ed.) Citation

ProQuest (Firm), Deirdre A. Gaquin, and Mary Meghan Ryan. County and City Extra: Annual Metro, City, and County Data Book. 24th edition. Lanham, MD: Bernan Press, 2016.

MLA (9th ed.) Citation

ProQuest (Firm), et al. County and City Extra: Annual Metro, City, and County Data Book. 24th edition. Bernan Press, 2016.