Cita APA (7a ed.)
Smalley, G., Paul, R. S., & Smalley, M. (2007). The DNA of relationships. Tyndale house publishers.
Cita Chicago Style (17a ed.)
Smalley, Gary, Robert S. Paul, y Michael Smalley. The DNA of Relationships. Illinois: Tyndale house publishers, 2007.
Cita MLA (9a ed.)
Smalley, Gary, et al. The DNA of Relationships. Tyndale house publishers, 2007.
Precaución: Estas citas no son 100% exactas.