Citazione Stile APA (7a Edizione)

Alexander, L. G. (1968). Developing skills: An integrated course for intermediate students. Longmans, Green and Co. LTD.

Citazione stile Chigago Style (17a edizione)

Alexander, L. G. Developing Skills: An Integrated Course for Intermediate Students. Londres, Inglaterra: Longmans, Green and Co. LTD, 1968.

Citatione MLA (9a ed.)

Alexander, L. G. Developing Skills: An Integrated Course for Intermediate Students. Longmans, Green and Co. LTD, 1968.