APA استشهاد

Forsyth, A. R. (1961). A treatise on differential equations (6th ed.). Macmillan.

استشهاد بنمط شيكاغو

Forsyth, Andrew Russell. A Treatise on Differential Equations. 6th ed. London: Macmillan, 1961.

MLA استشهاد

Forsyth, Andrew Russell. A Treatise on Differential Equations. 6th ed. Macmillan, 1961.