APA (7th ed.) Zitazioa

STRETTON, H. (1969). The political sciences: General principles of selection in social science and history. Routledge and Kegan Paul.

Chicago Style (17th ed.) Zitazioa

STRETTON, Hugh. The Political Sciences: General Principles of Selection in Social Science and History. London,: Routledge and Kegan Paul, 1969.

MLA (9th ed.) Zitazioa

STRETTON, Hugh. The Political Sciences: General Principles of Selection in Social Science and History. Routledge and Kegan Paul, 1969.