↑Haviland, William A.; Prins, Harald E. L.; McBride, Bunny; Walrath, Dana (2011). Cultural Anthropology: The Human Challenge (13th ed.). Cengage Learning. ISBN978-0-495-81178-7 . "A nonethnocentric definition of marriage is a culturally sanctioned union between two or more people that establishes certain rights and obligations between the people, between them and their children, and between them and their in-laws."