Citazione Stile APA (7a Edizione)

Eckersley, C. E. (1950). A modern english course for foreign students an intermediate book. Longmans Green.

Citazione stile Chigago Style (17a edizione)

Eckersley, C. E. A Modern English Course for Foreign Students an Intermediate Book. Londres: Longmans Green, 1950.

Citatione MLA (9a ed.)

Eckersley, C. E. A Modern English Course for Foreign Students an Intermediate Book. Longmans Green, 1950.