APA-referens (7:e uppl.)
Houle, K. (2014). Responsibility, complexity, and abortion: Toward a new image of ethical thought. Lexington Books.
Chicago-referens (17:e uppl.)
Houle, Karen. Responsibility, Complexity, and Abortion: Toward a New Image of Ethical Thought. Lanham, Maryland ; Plymouth, England: Lexington Books, 2014.
MLA-referens (9:e uppl.)
Houle, Karen. Responsibility, Complexity, and Abortion: Toward a New Image of Ethical Thought. Lexington Books, 2014.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.