APA-ийн эшлэл(7 дахь хэвлэлт)

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

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

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

MLA -ийн эшлэл (9 дэх хэвлэлт)

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