Benson, R. M. (1968). Steamships and motorships of the West Coast: A story in pictures and words about some famous and unusual vessels along the Pacific Coast of North America ([1st ed.].). Superior Pub. Co.
Trích dẫn kiểu Chicago (xuất bản lần thứ 7)Benson, Richard Marmaduke. Steamships and Motorships of the West Coast: A Story in Pictures and Words About Some Famous and Unusual Vessels Along the Pacific Coast of North America. [1st ed.]. Seattle: Superior Pub. Co, 1968.
Trích dẫn kiểu MLA (xuất bản lần thứ 8)Benson, Richard Marmaduke. Steamships and Motorships of the West Coast: A Story in Pictures and Words About Some Famous and Unusual Vessels Along the Pacific Coast of North America. [1st ed.]. Superior Pub. Co, 1968.
Cảnh báo: Các trích dẫn này có thể không phải lúc nào cũng chính xác 100%.