Citazione Stile APA (7a Edizione)
Alexander, L. G. (1987). First Things First Student's Book 1. An Integrated Course for Beginners (29.edition.). Longman Group UK.
Citazione stile Chigago Style (17a edizione)
Alexander, Louis George. First Things First Student's Book 1. An Integrated Course for Beginners. 29.edition. Harlow: Longman Group UK, 1987.
Citatione MLA (9a ed.)
Alexander, Louis George. First Things First Student's Book 1. An Integrated Course for Beginners. 29.edition. Longman Group UK, 1987.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.