APA (7. basım) Alıntı

Callaghan, J. (1992). Costing for contracts. Directory of cocial change.

Chicago Style (17. basım) Atıf

Callaghan, John. Costing for Contracts. London: Directory of cocial change, 1992.

MLA (8th ed.) Atıf

Callaghan, John. Costing for Contracts. Directory of cocial change, 1992.