Landicho, E. D. C., & Alferez, M. S. (2007). MSA textbook in trigonometry (Year 2007 ed.). MSA Academic Advancement Institute.
Citación estilo ChicagoLandicho, Elizabeth D. C., and Merle S. Alferez. MSA Textbook in Trigonometry. Year 2007 ed. Quezon City: MSA Academic Advancement Institute, 2007.
Cita MLALandicho, Elizabeth D. C., and Merle S. Alferez. MSA Textbook in Trigonometry. Year 2007 ed. MSA Academic Advancement Institute, 2007.
Warning: These citations may not always be 100% accurate.