Gaya APA

Lenski, G., Lenski, J. (1987). Human socieeties : an introduction to macrosociology (5th.ed.). New York: McGraw-Hill Book.

Gaya MLA

Lenski, Gerhard., Lenski, Jean. "Human socieeties : an introduction to macrosociology". 5th.ed. New York: McGraw-Hill Book, 1987. Text.