Lua APA (7ú heag.)
Malthus, T. R. (2001). An Investigation into the high price of provisions. Electric Book Co..
Lua i Stíl Chicago (17ú heag.)
Malthus, T. R. An Investigation into the High Price of Provisions. London: Electric Book Co., 2001.
Lua MLA (9ú heag.)
Malthus, T. R. An Investigation into the High Price of Provisions. Electric Book Co., 2001.
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