Παραπομπή APA

Clark, M. (1960). Elements of commerce: For beginers. Longmans green and company limited.

Παραπομπή Chicago Style

Clark, M. Elements of Commerce: For Beginers. London: Longmans green and company limited, 1960.

Παραπομπή MLA

Clark, M. Elements of Commerce: For Beginers. Longmans green and company limited, 1960.