Cita APA (7a ed.)

Sierra Ayala, L., & Morra de la Peña, A. M. (2002). Research in academic English: Communicative skills and strategies in the univesity context. Universidad.

Cita Chicago Style (17a ed.)

Sierra Ayala, Lina, y Ana M. Morra de la Peña. Research in Academic English: Communicative Skills and Strategies in the Univesity Context. Alcalá de Henares: Universidad, 2002.

Cita MLA (9a ed.)

Sierra Ayala, Lina, y Ana M. Morra de la Peña. Research in Academic English: Communicative Skills and Strategies in the Univesity Context. Universidad, 2002.