Παραπομπή APA

Hakim, C. (2000). Research design: Successful designs for social and economic research (2nd ed.). Routledge.

Παραπομπή Chicago Style

Hakim, Catherine. Research Design: Successful Designs for Social and Economic Research. 2nd ed. London: Routledge, 2000.

Παραπομπή MLA

Hakim, Catherine. Research Design: Successful Designs for Social and Economic Research. 2nd ed. Routledge, 2000.