Gaya APA

Lenski, G., Lenski, J. (1987). Human Societies: An Introduction To Macrosociology (Fifth Edition). United States of America: McGraw-Hil Book Company.

Gaya MLA

Lenski, Gerhard., Lenski, Jean. "Human Societies: An Introduction To Macrosociology". Fifth Edition United States of America: McGraw-Hil Book Company, 1987. Text.