Gaya APA

Salas, S., Hille, E. (1982). Calculus one and several variables with analitic geometry (4th ed). New York: John Wiley.

Gaya MLA

Salas, S.L.., Hille, Einar. "Calculus one and several variables with analitic geometry". 4th ed New York: John Wiley, 1982. Text.