APA (7th ed.) Citation

O'Connor, H. (1963). World crisis in oil. Elek books.

Chicago Style (17th ed.) Citation

O'Connor, Harvey. World Crisis in Oil. London: Elek books, 1963.

MLA (9th ed.) Citation

O'Connor, Harvey. World Crisis in Oil. Elek books, 1963.

Warning: These citations may not always be 100% accurate.