APA (7th ed.) Citation

GROALL, S., & RANKIN, W. (1992). Ecoology for buginners. Icon books.

Chicago Style (17th ed.) Citation

GROALL, STEPHEN, and WILLIAM RANKIN. Ecoology for Buginners. Cambridge: Icon books, 1992.

MLA (8th ed.) Citation

GROALL, STEPHEN, and WILLIAM RANKIN. Ecoology for Buginners. Icon books, 1992.