APA استشهاد

Simmons, G. F. (1974). Differential equations (1st.). TMH.

استشهاد بنمط شيكاغو

Simmons, George F. Differential Equations. 1st. New Delhi: TMH, 1974.

MLA استشهاد

Simmons, George F. Differential Equations. 1st. TMH, 1974.