Twitchell, K. S., & Jurji, E. J. (1953). Saudi Arabia: With an account of the development of its natural resources ([2nd. ed.].). Princeton University Press.
Citace podle Chicago (17th ed.)Twitchell, Karl Saben, a Edward Jabra Jurji. Saudi Arabia: With an Account of the Development of Its Natural Resources. [2nd. ed.]. Princeton, N.J: Princeton University Press, 1953.
Citace podle MLA (9th ed.)Twitchell, Karl Saben, a Edward Jabra Jurji. Saudi Arabia: With an Account of the Development of Its Natural Resources. [2nd. ed.]. Princeton University Press, 1953.
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