APA (7th ed.) Citation

Cansdale, G. S. (1938). The black poplars and their hybrids cultivated in Britain. University Press.

Chicago Style (17th ed.) Citation

Cansdale, George Soper. The Black Poplars and Their Hybrids Cultivated in Britain. Oxford [England]: University Press, 1938.

MLA (8th ed.) Citation

Cansdale, George Soper. The Black Poplars and Their Hybrids Cultivated in Britain. University Press, 1938.