APA (7th ed.) Zitazioa

Pittman, G. (1975). Preparatory technical english. Longman.

Chicago Style (17th ed.) Zitazioa

Pittman, G.A. Preparatory Technical English. London: Longman, 1975.

MLA (9th ed.) Zitazioa

Pittman, G.A. Preparatory Technical English. Longman, 1975.