Cita APA

Campbell,, B. G., Loy,, J. D., & Cruz Uribe,, K. (2006). Humankind emerging (9.). Pearson education.

Chicago Edition Citation

Campbell,, Bernard G., James D. Loy,, i Kathryn Cruz Uribe. Humankind Emerging. 9. New Jersey: Pearson education, 2006.

Cita MLA

Campbell,, Bernard G., et al. Humankind Emerging. 9. Pearson education, 2006.