Παραπομπή σε μορφή APA (7η εκδ.)

Drewry Shipping Consultants. (2005). Ship operating costs annual review and forecast - 2005/06. Drewry Shipping Consultants.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Drewry Shipping Consultants. Ship Operating Costs Annual Review and Forecast - 2005/06. London: Drewry Shipping Consultants, 2005.

Παραπομπή σε μορφή MLA (9th εκδ.)

Drewry Shipping Consultants. Ship Operating Costs Annual Review and Forecast - 2005/06. Drewry Shipping Consultants, 2005.