Friedl, J., & Whiteford, M. B. (1988). The human portrait: Introduction to cultural anthropology (2nd ed.). Prentice Hall.
Cita Chicago (17th ed.)Friedl, John, i Michael B. Whiteford. The Human Portrait: Introduction to Cultural Anthropology. 2nd ed. Englewood Cliffs, N.J: Prentice Hall, 1988.
Cita MLA (9th ed.)Friedl, John, i Michael B. Whiteford. The Human Portrait: Introduction to Cultural Anthropology. 2nd ed. Prentice Hall, 1988.
Atenció: Aquestes cites poden no estar 100% correctes.