Citazione APA

(1989). Listening to toefl: An official toefl study aid. New York: Educational Testing Service.

Stile di citazione Chicago

Listening to Toefl: An Official Toefl Study Aid. New York: Educational Testing Service, 1989.

Citazione MLA

Listening to Toefl: An Official Toefl Study Aid. New York: Educational Testing Service, 1989.

Attenzione: Queste citazioni potrebbero non essere precise al 100%.