Citazione Stile APA (7a Edizione)

FRANK, M. (1972). Modern english: Exercises for non-native speakers .. Prentice-Hall.

Citazione stile Chigago Style (17a edizione)

FRANK, Marcella. Modern English: Exercises for Non-native Speakers .. New Jersey: Prentice-Hall, 1972.

Citatione MLA (9a ed.)

FRANK, Marcella. Modern English: Exercises for Non-native Speakers .. Prentice-Hall, 1972.