Ewart, W. D. (1983). Bulk carriers. Fairplay.
Cita Chicago (17th ed.)Ewart, W. D. Bulk Carriers. Londres: Fairplay, 1983.
Cita MLA (9th ed.)Ewart, W. D. Bulk Carriers. Fairplay, 1983.
Atenció: Aquestes cites poden no estar 100% correctes.
Cita APA (7th ed.)