Dyfyniad APA

Petrovsky, I. G. (1991). Lectures on partial differential equations. Dover.

Dyfyniad Arddull Chicago

Petrovsky, Ivan Georgievich. Lectures on Partial Differential Equations. Nueva York: Dover, 1991.

Dyfyniad MLA

Petrovsky, Ivan Georgievich. Lectures on Partial Differential Equations. Dover, 1991.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.