APA引文

Ladd, E. C., & Bowman, K. H. (1999). Public opinion about abortion (2nd ed.). AEI Press.

芝加哥风格引文

Ladd, Everett Carll, 与 Karlyn H. Bowman. Public Opinion About Abortion. 2nd ed. Washington, D.C.: AEI Press, 1999.

MLA引文

Ladd, Everett Carll, 与 Karlyn H. Bowman. Public Opinion About Abortion. 2nd ed. AEI Press, 1999.