Citazione Stile APA (7a Edizione)

Hall, E. J. (1967). Practical conversation in english: For advanced students (1a. ed.). Regents.

Citazione stile Chigago Style (17a edizione)

Hall, Eugene J. Practical Conversation in English: For Advanced Students. 1a. ed. Nueva York: Regents, 1967.

Citatione MLA (9a ed.)

Hall, Eugene J. Practical Conversation in English: For Advanced Students. 1a. ed. Regents, 1967.