Παραπομπή APA

O'Shaughnessy, J. (1965). Work study applied to a sales force. British.

Παραπομπή Chicago Style

O'Shaughnessy, J. Work Study Applied to a Sales Force. London: British, 1965.

Παραπομπή MLA

O'Shaughnessy, J. Work Study Applied to a Sales Force. British, 1965.