Domingo, A. C., Dimasuay, L. B., Lawas, V. M., Lubag, S. P., & Almonte, V. D. (2015). Worktext in college trigonometry (Second edition.). C & E Publishing, Inc.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रDomingo, Alleli C., Lynie B. Dimasuay, Vernel M. Lawas, Sharon P. Lubag, और Velimor D. Almonte. Worktext in College Trigonometry. Second edition. Quezon City: C & E Publishing, Inc, 2015.
एमएलए (9वां संस्करण) प्रशस्ति पत्रDomingo, Alleli C., et al. Worktext in College Trigonometry. Second edition. C & E Publishing, Inc, 2015.
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