Παραπομπή APA

Institute of Shipping Economics and Logistics. (1998). Shipping statistics yearbook 1998. Bremen: Institute of Shipping Economics and Logistics.

Παραπομπή Chicago Style

Institute of Shipping Economics and Logistics. Shipping Statistics Yearbook 1998. Bremen: Institute of Shipping Economics and Logistics, 1998.

Παραπομπή MLA

Institute of Shipping Economics and Logistics. Shipping Statistics Yearbook 1998. Bremen: Institute of Shipping Economics and Logistics, 1998.

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