Παραπομπή APA

Duff, P. (1949). British ships and shipping: 1a2 survey of modern ship design and shipping practice. London: George G. Harrap and company.

Παραπομπή Chicago Style

Duff, Peter. British Ships and Shipping: 1a2 Survey of Modern Ship Design and Shipping Practice. London: George G. Harrap and company, 1949.

Παραπομπή MLA

Duff, Peter. British Ships and Shipping: 1a2 Survey of Modern Ship Design and Shipping Practice. London: George G. Harrap and company, 1949.

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