Ladd, E. C., & Bowman, K. H. (1999). Public opinion about abortion (2nd ed.). AEI Press.
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Chicago-čujuhus (17. p.)
Ladd, Everett Carll, juo Karlyn H. Bowman. Public Opinion About Abortion. 2nd ed. Washington, D.C.: AEI Press, 1999.
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MLA-čujuhus (9. p.)
Ladd, Everett Carll, juo Karlyn H. Bowman. Public Opinion About Abortion. 2nd ed. AEI Press, 1999.
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