Παραπομπή APA

Alexandersson, G., & Norstrom, G. (1963). World shipping: An economy geography of ports and seaborne trade. Stockholm: Almqvist & Wiksell.

Παραπομπή Chicago Style

Alexandersson, Gunnar, and Goran Norstrom. World Shipping: An Economy Geography of Ports and Seaborne Trade. Stockholm: Almqvist & Wiksell, 1963.

Παραπομπή MLA

Alexandersson, Gunnar, and Goran Norstrom. World Shipping: An Economy Geography of Ports and Seaborne Trade. Stockholm: Almqvist & Wiksell, 1963.

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