Dyfyniad APA

Keyfitz, N. (1971). Population Facts And Methods Of Demography. W.H.Freeman And Company.

Dyfyniad Arddull Chicago

Keyfitz, Nathan. Population Facts And Methods Of Demography. : W.H.Freeman And Company, 1971.

Dyfyniad MLA

Keyfitz, Nathan. Population Facts And Methods Of Demography. W.H.Freeman And Company, 1971.

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