APA (7e ed.) Bronvermelding

Cable, J. L., & Nanney, J. L. (1979). Trigonometry: A skills approach : lecture version. Allyn & Bacon.

Chicago (17e ed.) Bronvermelding

Cable, John Laurence, en J. Louis Nanney. Trigonometry: A Skills Approach : Lecture Version. Boston: Allyn & Bacon, 1979.

MLA (9e ed.) Bronvermelding

Cable, John Laurence, en J. Louis Nanney. Trigonometry: A Skills Approach : Lecture Version. Allyn & Bacon, 1979.