APA (7th ed.) Citation

Petrovskini, I. G. (1967). Partial differential equations. Saunders College Publishing.

Chicago Style (17th ed.) Citation

Petrovskini, I. G. Partial Differential Equations. Philadelphia: Saunders College Publishing, 1967.

MLA (9th ed.) Citation

Petrovskini, I. G. Partial Differential Equations. Saunders College Publishing, 1967.