APA (7th ed.) Citation

Roberts, M. F., & Roberts, M. D. (1976). All about iguanas. T.F.H. Publications.

Chicago Style (17th ed.) Citation

Roberts, Mervin F., and Martha D. Roberts. All About Iguanas. Hong Kong ; Neptune City, N.J.: T.F.H. Publications, 1976.

MLA (9th ed.) Citation

Roberts, Mervin F., and Martha D. Roberts. All About Iguanas. T.F.H. Publications, 1976.