APA (7th ed.) Citation

Castillo, A. C., Reyes, M. D., & Bhagwani, E. T. (2003). Modules in plane trigonometry. Great Books Trading.

Chicago Style (17th ed.) Citation

Castillo, Aida C., Myrna D. Reyes, and Ernie T. Bhagwani. Modules in Plane Trigonometry. Quezon City: Great Books Trading, 2003.

MLA (9th ed.) Citation

Castillo, Aida C., et al. Modules in Plane Trigonometry. Great Books Trading, 2003.