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.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)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.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)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.
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