Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

Carpio, Rustica C., y Anacleta M. Encarnacion. Effective Speaking. Manila: Rex Book Store, 1981.

Cita MLA (9a ed.)

Carpio, Rustica C., y Anacleta M. Encarnacion. Effective Speaking. Rex Book Store, 1981.