Ladd, E. C., & Bowman, K. H. (1999). Public opinion about abortion (2nd ed.). AEI Press.
Chicago-čujuhus (17. p.)Ladd, Everett Carll, juo Karlyn H. Bowman. Public Opinion About Abortion. 2nd ed. Washington, D.C.: AEI Press, 1999.
MLA-čujuhus (9. p.)Ladd, Everett Carll, juo Karlyn H. Bowman. Public Opinion About Abortion. 2nd ed. AEI Press, 1999.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.