Catolos, E. C., Feniquito, I. A., Amado, M. V. P., Avecilla, L. A., Alba, M. C. S., & Valderama, J. S. (2013). Plane and spherical trigonometry (2013 edition.). Mutya Publishing House, Incorporated.
Chicago Style (17th ed.) CitationCatolos, Elvira C., Iryne A. Feniquito, Ma. Victoria P. Amado, Leni A. Avecilla, Ma. Cristina S. Alba, and Julius S. Valderama. Plane and Spherical Trigonometry. 2013 edition. Malabon City: Mutya Publishing House, Incorporated, 2013.
MLA (9th ed.) CitationCatolos, Elvira C., et al. Plane and Spherical Trigonometry. 2013 edition. Mutya Publishing House, Incorporated, 2013.
Warning: These citations may not always be 100% accurate.