Cita APA (7a ed.)

Richterich, R., & Chancerel, J. (1980). Identifying the needs of adults learning a foreign language. Pergamon Press.

Cita Chicago Style (17a ed.)

Richterich, René, y Jean-Louis Chancerel. Identifying the Needs of Adults Learning a Foreign Language. Oxford ; New York: Pergamon Press, 1980.

Cita MLA (9a ed.)

Richterich, René, y Jean-Louis Chancerel. Identifying the Needs of Adults Learning a Foreign Language. Pergamon Press, 1980.