Timm, s. (1980). Directory of ship owners , ship builders and marine engineers. Marine week.
استشهاد بنمط شيكاغوTimm, simon. Directory of Ship Owners , Ship Builders and Marine Engineers. England: Marine week, 1980.
MLA استشهادTimm, simon. Directory of Ship Owners , Ship Builders and Marine Engineers. Marine week, 1980.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.