APA-viite (7. p.)

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

Chicago-viite (17. p.)

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

MLA-viite (9. p.)

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