APA (7th ed.) Citation

Ritchie, J. C. (1987). Postglacial vegetation of Canada. Cambridge University Press.

Chicago Style (17th ed.) Citation

Ritchie, J. C. Postglacial Vegetation of Canada. Cambridge [Cambridgeshire] ; New York: Cambridge University Press, 1987.

MLA (9th ed.) Citation

Ritchie, J. C. Postglacial Vegetation of Canada. Cambridge University Press, 1987.