Cita APA (7a ed.)

Martínez, R. (1997). Conversation lessons the natural language of conversation. Language Teaching Publications.

Cita Chicago Style (17a ed.)

Martínez, Ron. Conversation Lessons the Natural Language of Conversation. Hove, England: Language Teaching Publications, 1997.

Cita MLA (9a ed.)

Martínez, Ron. Conversation Lessons the Natural Language of Conversation. Language Teaching Publications, 1997.