APA引文

Malthus T.R. (1961). An Essay an Population Volume II (1961.). J.M. Dent and Sons Ltd.

Chicago Edition Citation

Malthus T.R. An Essay an Population Volume II. 1961. London: J.M. Dent and Sons Ltd, 1961.

MLA引文

Malthus T.R. An Essay an Population Volume II. 1961. J.M. Dent and Sons Ltd, 1961.