LENSKI, G., & LENSKI,Jean. (1987). Human societies: An introduction to macrosociology.--ed.5. McGraw-Hill.

LENSKI, Gerhard, and LENSKI,Jean. Human Societies: An Introduction to Macrosociology.--ed.5. New York: McGraw-Hill, 1987.

LENSKI, Gerhard, and LENSKI,Jean. Human Societies: An Introduction to Macrosociology.--ed.5. McGraw-Hill, 1987.