Παραπομπή APA

Lang, S. (1973). Calculus of several variables. Addison-Wesley Pub. Co.

Παραπομπή Chicago Style

Lang, Serge. Calculus of Several Variables. Reading, Mass.: Addison-Wesley Pub. Co, 1973.

Παραπομπή MLA

Lang, Serge. Calculus of Several Variables. Addison-Wesley Pub. Co, 1973.