Παραπομπή σε μορφή APA (7η εκδ.)

Rubia, R. O. (2007). A history of the growth of the shipping industry and the development of the port area of Cebu before the American era.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Rubia, Roquezon O. A History of the Growth of the Shipping Industry and the Development of the Port Area of Cebu Before the American Era. 2007.

Παραπομπή σε μορφή MLA (9th εκδ.)

Rubia, Roquezon O. A History of the Growth of the Shipping Industry and the Development of the Port Area of Cebu Before the American Era. 2007.