Cita APA (7a ed.)

Grenfell, M., & Harris, V. (1999). Modern languages and learning strategies: In theory and practice. Routledge.

Cita Chicago Style (17a ed.)

Grenfell, Michael, y Vee Harris. Modern Languages and Learning Strategies: In Theory and Practice. London ; New York: Routledge, 1999.

Cita MLA (9a ed.)

Grenfell, Michael, y Vee Harris. Modern Languages and Learning Strategies: In Theory and Practice. Routledge, 1999.