APA (7e ed.) Bronvermelding

Lial, M. L., Hornsby, J., & Schneider, D. I. (2006). Trigonometry (8th ed.). Pearson.

Chicago (17e ed.) Bronvermelding

Lial, Margaret L., John Hornsby, en David I. Schneider. Trigonometry. 8th ed. Philippines: Pearson, 2006.

MLA (9e ed.) Bronvermelding

Lial, Margaret L., et al. Trigonometry. 8th ed. Pearson, 2006.