Cita APA (7a ed.)

Muchlis, A. (2011). Key to Speaking. Jaring Pena.

Cita Chicago Style (17a ed.)

Muchlis, Ach. Key to Speaking. Jaring Pena, 2011.

Cita MLA (9a ed.)

Muchlis, Ach. Key to Speaking. Jaring Pena, 2011.