APA ציטוט

Ion D. C. (1975). Availability of World Energy Resources. London, Graham&Trotman Ltd, 1975.

Chicago Style (17th ed.) Citation

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

ציטוט MLA

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