Παραπομπή APA

Shipman, M. (1981). Limitations of social research (2 edition.). Longman & Co.

Παραπομπή Chicago Style

Shipman, Marten. Limitations of Social Research. 2 edition. London: Longman & Co, 1981.

Παραπομπή MLA

Shipman, Marten. Limitations of Social Research. 2 edition. Longman & Co, 1981.