Cita APA (7th ed.)

Hestenes, M. D., & Hill, R. O., Jr. (1986). Trigonometry (2nd ed.). Prentice-Hall.

Cita Chicago (17th ed.)

Hestenes, Marshall D., i Richard O. Hill, Jr. Trigonometry. 2nd ed. New Jersey: Prentice-Hall, 1986.

Cita MLA (9th ed.)

Hestenes, Marshall D., i Richard O. Hill, Jr. Trigonometry. 2nd ed. Prentice-Hall, 1986.