Dyfyniad APA

Duff, G. F. D. (1956). Partial differential equations. University of Toronto Press.

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

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