Cita APA (7th ed.)

Richterich, R., & Chancerel, J. (1977). Identifying the needs of adults learning a foreign language. Pergamon Press.

Cita Chicago (17th ed.)

Richterich, René, i Jean-Louis Chancerel. Identifying the Needs of Adults Learning a Foreign Language. Oxford: Pergamon Press, 1977.

Cita MLA (9th ed.)

Richterich, René, i Jean-Louis Chancerel. Identifying the Needs of Adults Learning a Foreign Language. Pergamon Press, 1977.