Cita APA (7th ed.)

HOWES, V. E. (1967). Pre-calculus mathematics.: A programmed text. John Wiley.

Cita Chicago (17th ed.)

HOWES, Vernon E. Pre-calculus Mathematics.: A Programmed Text. New York: John Wiley, 1967.

Cita MLA (9th ed.)

HOWES, Vernon E. Pre-calculus Mathematics.: A Programmed Text. John Wiley, 1967.