Morgan, W. B., & Munton, R. J. C. (1971). Agricultural geography. Methuen.
Lua i Stíl Chicago (17ú heag.)Morgan, W. B., agus R. J. C. Munton. Agricultural Geography. London: Methuen, 1971.
Lua MLA (9ú heag.)Morgan, W. B., agus R. J. C. Munton. Agricultural Geography. Methuen, 1971.
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