Kirk, A. (2000). A Flier in Oil: Adolph B.Spreckels and the Rise of the California Petroleum Industry. San Francisco.
استشهاد بنمط شيكاغوKirk, Anthony. A Flier in Oil: Adolph B.Spreckels and the Rise of the California Petroleum Industry. San Francisco, 2000.
MLA استشهادKirk, Anthony. A Flier in Oil: Adolph B.Spreckels and the Rise of the California Petroleum Industry. San Francisco, 2000.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.