Παραπομπή APA

Institute of Shipping Economics and Logistics. (1999). Shipping statistics yearbook 1999. Bremen: Institute of Shipping Economics and Logistics.

Παραπομπή Chicago Style

Institute of Shipping Economics and Logistics. Shipping Statistics Yearbook 1999. Bremen: Institute of Shipping Economics and Logistics, 1999.

Παραπομπή MLA

Institute of Shipping Economics and Logistics. Shipping Statistics Yearbook 1999. Bremen: Institute of Shipping Economics and Logistics, 1999.

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