APA (7th ed.) Citation
IUCN, UNEP, WWF, Collins N. M., Pyle R. M., & Wells S. M. (1983). The IUCN invertebrate red data book. IUCN.
Chicago Style (17th ed.) Citation
IUCN, UNEP, WWF, Collins N. M., Pyle R. M., and Wells S. M. The IUCN Invertebrate Red Data Book. IUCN, 1983.
MLA (9th ed.) Citation
IUCN, et al. The IUCN Invertebrate Red Data Book. IUCN, 1983.
Warning: These citations may not always be 100% accurate.