Velasquez, C. C., & Asis, C. V. (1993). Modern biology (Philippine version): With biology investigations (Revised edition.). National Book Store, Inc.
Čikaški stil citiranja (17. izdanje)Velasquez, Carmen Camacho, i Consuelo Villamor Asis. Modern Biology (Philippine Version): With Biology Investigations. Revised edition. [Mandaluyong City, Metro Manila]: National Book Store, Inc, 1993.
MLA način citiranja (9. izdanje)Velasquez, Carmen Camacho, i Consuelo Villamor Asis. Modern Biology (Philippine Version): With Biology Investigations. Revised edition. National Book Store, Inc, 1993.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.