APA (7th ed.) Citation

Velasquez, C. C., & Asis, C. V. (1993). Modern biology: Philippine version with biology investigations (Revised edition.). National Book Store.

Chicago Style (17th ed.) Citation

Velasquez, Carmen Camacho, and Consuelo Villamor Asis. Modern Biology: Philippine Version with Biology Investigations. Revised edition. Mandaluyong City: National Book Store, 1993.

MLA (9th ed.) Citation

Velasquez, Carmen Camacho, and Consuelo Villamor Asis. Modern Biology: Philippine Version with Biology Investigations. Revised edition. National Book Store, 1993.