Παραπομπή APA

(1996). Safer cleaner ships: What are the financial implications? London: Drewry Shipping Consultants.

Παραπομπή Chicago Style

Safer Cleaner Ships: What Are the Financial Implications? London: Drewry Shipping Consultants, 1996.

Παραπομπή MLA

Safer Cleaner Ships: What Are the Financial Implications? London: Drewry Shipping Consultants, 1996.

Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.