APA (7th ed.) Citation

Rees, D., & Rees, P. K. (1968). Trigonometry (Second edition.). Ken Incorporated.

Chicago Style (17th ed.) Citation

Rees, Dorothy, and Paul K. Rees. Trigonometry. Second edition. Quezon City: Ken Incorporated, 1968.

MLA (9th ed.) Citation

Rees, Dorothy, and Paul K. Rees. Trigonometry. Second edition. Ken Incorporated, 1968.