Citazione Stile APA (7a Edizione)

Berlitz. (1928). Method for teaching modern languages (390a. ed.). The Berlitz School.

Citazione stile Chigago Style (17a edizione)

Berlitz. Method for Teaching Modern Languages. 390a. ed. Londres: The Berlitz School, 1928.

Citatione MLA (9a ed.)

Berlitz. Method for Teaching Modern Languages. 390a. ed. The Berlitz School, 1928.