APA (7th ed.) Citation

Ball, I. R., Gourbault, N., & Kenk, R. (1981). The planarians -Turbellaria- of temporary waters in Eastern North America. Royal Ontario Museum.

Chicago Style (17th ed.) Citation

Ball, Ian R., N. Gourbault, and Roman Kenk. The Planarians -Turbellaria- of Temporary Waters in Eastern North America. Toronto: Royal Ontario Museum, 1981.

MLA (9th ed.) Citation

Ball, Ian R., et al. The Planarians -Turbellaria- of Temporary Waters in Eastern North America. Royal Ontario Museum, 1981.