Citace podle APA (7th ed.)
(1960). Fifty Years in pictures: A story of the development of the British Petroleum Group. 1909-1959. British Petroleum Co.
Citace podle Chicago (17th ed.)
Fifty Years in Pictures: A Story of the Development of the British Petroleum Group. 1909-1959. London: British Petroleum Co, 1960.
Citace podle MLA (9th ed.)
Fifty Years in Pictures: A Story of the Development of the British Petroleum Group. 1909-1959. British Petroleum Co, 1960.
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