Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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