Cita APA

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

Citación estilo Chicago

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

Cita MLA

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