Cox, P. R. (1989). Demography (5th ed.). Universal Book Stall Publishers.
Chicago Edition CitationCox, Peter R. Demography. 5th ed. New Delhi: Universal Book Stall Publishers, 1989.
Cita MLACox, Peter R. Demography. 5th ed. Universal Book Stall Publishers, 1989.
Atenció: Aquestes cites poden no estar 100% correctes.