Cita APA (7th ed.)

Johnson, K. (2001). An introduction to foreign language learning and teaching. Longman.

Cita Chicago (17th ed.)

Johnson, Keith. An Introduction to Foreign Language Learning and Teaching. Harlow, Essex, London ; New York: Longman, 2001.

Cita MLA (8th ed.)

Johnson, Keith. An Introduction to Foreign Language Learning and Teaching. Longman, 2001.