APA (7th ed.) Citation

Lial, M. L., Hornsby, E. J., & Schneider, D. I. (2009). Trigonometry (9th ed.). Pearson/Addison-Wesley.

Chicago Style (17th ed.) Citation

Lial, Margaret L., E. John Hornsby, and David I. Schneider. Trigonometry. 9th ed. Boston, Mass: Pearson/Addison-Wesley, 2009.

MLA (9th ed.) Citation

Lial, Margaret L., et al. Trigonometry. 9th ed. Pearson/Addison-Wesley, 2009.