APA (7th ed.) Citation

Nyhuis, A. W., & Wassner, J. (2008). America's best zoos: A travel guide for fans and families. Intrepid Traveler.

Chicago Style (17th ed.) Citation

Nyhuis, Allen W., and Jon Wassner. America's Best Zoos: A Travel Guide for Fans and Families. Branford, Conn.: Intrepid Traveler, 2008.

MLA (9th ed.) Citation

Nyhuis, Allen W., and Jon Wassner. America's Best Zoos: A Travel Guide for Fans and Families. Intrepid Traveler, 2008.