Preston, P. W. (1985). New trends in development theory: Essays in development and social theory. Routledge & Kegan Paul.
Lua i Stíl Chicago (17ú heag.)Preston, P. W. New Trends in Development Theory: Essays in Development and Social Theory. London: Routledge & Kegan Paul, 1985.
Lua MLA (9ú heag.)Preston, P. W. New Trends in Development Theory: Essays in Development and Social Theory. Routledge & Kegan Paul, 1985.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.