APA (7th ed.) Citation

Sobolev, S. L. (1989). Partial differential equations of mathematical physics (Unabr. and unaltered republ. of the work first publ. in 1964.). Dover Publ.

Chicago Style (17th ed.) Citation

Sobolev, S. L. Partial Differential Equations of Mathematical Physics. Unabr. and unaltered republ. of the work first publ. in 1964. New York: Dover Publ, 1989.

MLA (9th ed.) Citation

Sobolev, S. L. Partial Differential Equations of Mathematical Physics. Unabr. and unaltered republ. of the work first publ. in 1964. Dover Publ, 1989.