Παραπομπή APA

Thurling, F. (1963). Office practice today. Sir Isaac pitman & sons.

Παραπομπή Chicago Style

Thurling, F.C. Office Practice Today. London: Sir Isaac pitman & sons, 1963.

Παραπομπή MLA

Thurling, F.C. Office Practice Today. Sir Isaac pitman & sons, 1963.