Παραπομπή σε μορφή APA (7η εκδ.)

Longman. (1990). Teaching at the intermediate or ''take off'' level: A teacher training video. Longman.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Longman. Teaching at the Intermediate or ''take off'' Level: A Teacher Training Video. England: Longman, 1990.

Παραπομπή σε μορφή MLA (8th εκδ.)

Longman. Teaching at the Intermediate or ''take off'' Level: A Teacher Training Video. Longman, 1990.