APA citiranje

Petrovsky, I. G., & Shenitzer, A. (1991). Lectures on partial differential equations. New York: Dover Publications, Inc..

Trích dẫn kiểu Chicago

Petrovsky, I. G., và Abe Shenitzer. Lectures On Partial Differential Equations. New York: Dover Publications, Inc., 1991.

MLA citiranje

Petrovsky, I. G., và Abe Shenitzer. Lectures On Partial Differential Equations. New York: Dover Publications, Inc., 1991.