Citazione Stile APA (7a Edizione)

(1939). Method for teaching modern languages (English Part. First book) (528ª.). Berlitz Holdings.

Citazione stile Chigago Style (17a edizione)

Method for Teaching Modern Languages (English Part. First Book). 528ª. London: Berlitz Holdings, 1939.

Citatione MLA (9a ed.)

Method for Teaching Modern Languages (English Part. First Book). 528ª. Berlitz Holdings, 1939.