Gaya APA

HILLE, E., SALAS, S, L. (1974). CALCULUS: ONE AND SEVERAL VARIABLES PART 2 (2nd). Massachusetts: Xerox.

Gaya MLA

HILLE, EINAR., SALAS, Saturnino, L.. "CALCULUS: ONE AND SEVERAL VARIABLES PART 2". 2nd Massachusetts: Xerox, 1974. Textbook.