APA (7th ed.) Citation

Gunnels, C. B., Green, S. E., & Butler, P. M. (2012). Joint libraries: Models that work. American Library Association.

Chicago Style (17th ed.) Citation

Gunnels, Claire B., Susan E. Green, and Patricia M. Butler. Joint Libraries: Models That Work. Chicago: American Library Association, 2012.

MLA (9th ed.) Citation

Gunnels, Claire B., et al. Joint Libraries: Models That Work. American Library Association, 2012.