Citazione Stile APA (7a Edizione)

Preston, P. W. (1982). Theories of development (First published.). Routledge & Kegan Paul.

Citazione stile Chigago Style (17a edizione)

Preston, P. W.. Theories of Development. First published. London ; Boston ; Melbourne ; Henley: Routledge & Kegan Paul, 1982.

Citatione MLA (9a ed.)

Preston, P. W.. Theories of Development. First published. Routledge & Kegan Paul, 1982.