Ankerberg, J., & Weldon, J. (1989). When does life begin?: And 39 other tough questions about abortion. Wolgemuth & Hyatt.
Citazione stile Chigago Style (17a edizione)Ankerberg, John, e John Weldon. When Does Life Begin?: And 39 Other Tough Questions About Abortion. Brentwood, Tenn.: Wolgemuth & Hyatt, 1989.
Citatione MLA (9a ed.)Ankerberg, John, e John Weldon. When Does Life Begin?: And 39 Other Tough Questions About Abortion. Wolgemuth & Hyatt, 1989.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.