Cita APA (7th ed.)

Puchta, H., & Schratz, M. (1997). Teaching teenagers: Model activity sequences for humanistic language learning. Longman.

Cita Chicago (17th ed.)

Puchta, Herbert, i Michael Schratz. Teaching Teenagers: Model Activity Sequences for Humanistic Language Learning. Essex: Longman, 1997.

Cita MLA (9th ed.)

Puchta, Herbert, i Michael Schratz. Teaching Teenagers: Model Activity Sequences for Humanistic Language Learning. Longman, 1997.