Cita APA (7th ed.)

Gerngross, G., & Puchta, H. (1996). Do and understand: 50 action stories for young learners. Longman.

Cita Chicago (17th ed.)

Gerngross, Günther, i Herbert Puchta. Do and Understand: 50 Action Stories for Young Learners. Viena: Longman, 1996.

Cita MLA (9th ed.)

Gerngross, Günther, i Herbert Puchta. Do and Understand: 50 Action Stories for Young Learners. Longman, 1996.