East, W. G., & Moodie, A. E. (1956). The changing world: Studies in political geography. George G. Harrap & Co..
Lua i Stíl Chicago (17ú heag.)East, W. G., agus A. E. Moodie. The Changing World: Studies in Political Geography. London: George G. Harrap & Co., 1956.
Lua MLA (8ú heag.)East, W. G., agus A. E. Moodie. The Changing World: Studies in Political Geography. George G. Harrap & Co., 1956.
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