Cita APA (7a ed.)

Greif, G. L., & Hegar, R. L. (1993). When parents kidnap: The families behind the headlines. Free P. [u.a.].

Cita Chicago Style (17a ed.)

Greif, Geoffrey L., y Rebecca L. Hegar. When Parents Kidnap: The Families Behind the Headlines. New York: Free P. [u.a.], 1993.

Cita MLA (9a ed.)

Greif, Geoffrey L., y Rebecca L. Hegar. When Parents Kidnap: The Families Behind the Headlines. Free P. [u.a.], 1993.