Singh, S., & Wulf, D. H. (2009). Abortion worldwide: A decade of uneven progress.
Čikaški stil citiranja (17. izdanje)Singh, Susheela, i Deirdre Hussain Wulf. Abortion Worldwide: A Decade of Uneven Progress. 2009.
MLA način citiranja (8. izdanje)Singh, Susheela, i Deirdre Hussain Wulf. Abortion Worldwide: A Decade of Uneven Progress. 2009.
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