APA aipamena

Ion, D. C. (1975). Availability of world energy resources. Graham and Trotman Ltd.

Chicago Style aipamena

Ion, D. C. Availability of World Energy Resources. London: Graham and Trotman Ltd, 1975.

MLA aipamena

Ion, D. C. Availability of World Energy Resources. Graham and Trotman Ltd, 1975.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.