Παραπομπή σε μορφή APA (7η εκδ.)

Gubbins, E. J. (1986). The shipping industry: The technology and economics of specialisation. Gordon and Breach Science Publishers.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Gubbins, Edmund J. The Shipping Industry: The Technology and Economics of Specialisation. Nueva York: Gordon and Breach Science Publishers, 1986.

Παραπομπή σε μορφή MLA (9th εκδ.)

Gubbins, Edmund J. The Shipping Industry: The Technology and Economics of Specialisation. Gordon and Breach Science Publishers, 1986.