APA (7th ed.) Citation

Duff, G. F. D. (1956). Partial Differential Equations. University of Toronto Press.

Chicago Style (17th ed.) Citation

Duff, G. F. D. Partial Differential Equations. Toronto: University of Toronto Press, 1956.

MLA (8th ed.) Citation

Duff, G. F. D. Partial Differential Equations. University of Toronto Press, 1956.

Warning: These citations may not always be 100% accurate.