APA (7e ed.) Bronvermelding

Caras, M. S., Raphael, J. C., Santos, A. S., Villarosa, C. G., & Cabero, J. B. (2008). Plane trigonometry. Booklore Pub.

Chicago (17e ed.) Bronvermelding

Caras, Madeleine S., Johann C. Raphael, Annaliza SM Santos, Cherry G. Villarosa, en Jonathan B. Cabero. Plane Trigonometry. Manila: Booklore Pub, 2008.

MLA (9e ed.) Bronvermelding

Caras, Madeleine S., et al. Plane Trigonometry. Booklore Pub, 2008.