Cita APA (7th ed.)

SELBY, P. H. (1964). Trigonometry self-taught: A simplified, programmed course. McGraw-Hill.

Cita Chicago (17th ed.)

SELBY, Peter H. Trigonometry Self-taught: A Simplified, Programmed Course. New York: McGraw-Hill, 1964.

Cita MLA (9th ed.)

SELBY, Peter H. Trigonometry Self-taught: A Simplified, Programmed Course. McGraw-Hill, 1964.