APA (7th ed.) Citation

Carpio, R. C., Encarnacion, A. M., & Abid, R. R. (1981). Effective speaking. Rex Book Store.

Chicago Style (17th ed.) Citation

Carpio, Rustica C., Anacleta M. Encarnacion, and Rebecca R. Abid. Effective Speaking. Manila: Rex Book Store, 1981.

MLA (9th ed.) Citation

Carpio, Rustica C., et al. Effective Speaking. Rex Book Store, 1981.