Hickman, G. C., Hickman, S. M., & Krebs, C. J. (2002). The ecology action guide. B. Cummings.
Chicago Style (17th ed.) CitationHickman, Graham C., Susan M. Hickman, and Charles J. Krebs. The Ecology Action Guide. San Francisco: B. Cummings, 2002.
MLA (9th ed.) CitationHickman, Graham C., et al. The Ecology Action Guide. B. Cummings, 2002.