APA (7th ed.) Citation

Masaoy, E. (1985). Plane and spherical trigonometry. National Book Store.

Chicago Style (17th ed.) Citation

Masaoy, Evelina. Plane and Spherical Trigonometry. Manila: National Book Store, 1985.

MLA (9th ed.) Citation

Masaoy, Evelina. Plane and Spherical Trigonometry. National Book Store, 1985.