APA (7th ed.) Citation

Rigby, J. K., & Chatterton, B. (1989). Middle Silurian, Ludlovian and Wenlockian sponges from Baillie-Hamilton and Cornwallis Islands, Arctic Canada.

Chicago Style (17th ed.) Citation

Rigby, J. Keith, and Brian Chatterton. Middle Silurian, Ludlovian and Wenlockian Sponges from Baillie-Hamilton and Cornwallis Islands, Arctic Canada. Ottawa, 1989.

MLA (9th ed.) Citation

Rigby, J. Keith, and Brian Chatterton. Middle Silurian, Ludlovian and Wenlockian Sponges from Baillie-Hamilton and Cornwallis Islands, Arctic Canada. 1989.