Cita APA

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

Citación estilo Chicago

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

Cita MLA

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