Dyfyniad APA

Pitchford, J. (1974). Population in Economic Growth. North Holland Publishing company.

Dyfyniad Arddull Chicago

Pitchford, J.D. Population in Economic Growth. Amsterdam: North Holland Publishing company, 1974.

Dyfyniad MLA

Pitchford, J.D. Population in Economic Growth. North Holland Publishing company, 1974.

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