Harrison, P., & Rowley, J. (1984). Human numbers, human needs. International Planned Parenthood Federation.
Čikaški stil citiranja (17. izdanje)Harrison, Paul, i John Rowley. Human Numbers, Human Needs. London: International Planned Parenthood Federation, 1984.
MLA način citiranja (9. izdanje)Harrison, Paul, i John Rowley. Human Numbers, Human Needs. International Planned Parenthood Federation, 1984.
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