Ember, C. R., & Ember, M. (1999). Cultural anthropology (9th ed.). Prentice hall.

Ember, Carol R., and Melvin Ember. Cultural Anthropology. 9th ed. New Jersey: Prentice hall, 1999.

Ember, Carol R., and Melvin Ember. Cultural Anthropology. 9th ed. Prentice hall, 1999.