Παραπομπή APA

Duncan, J. A. (1992). Marine technical consultancy: A guide to the principles and practice of consulting marine engineering and ship surveying. London: Witherby.

Παραπομπή Chicago Style

Duncan, J. A. Marine Technical Consultancy: A Guide to the Principles and Practice of Consulting Marine Engineering and Ship Surveying. London: Witherby, 1992.

Παραπομπή MLA

Duncan, J. A. Marine Technical Consultancy: A Guide to the Principles and Practice of Consulting Marine Engineering and Ship Surveying. London: Witherby, 1992.

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