Gaya APA

Lester, J., Koehler, W, C. (2007). Fundamentals of information studies : understanding information and its environment (2nd ed.). New York: Neal-Schuman Publishers.

Gaya MLA

Lester, June., Koehler, Wallace, C.. "Fundamentals of information studies : understanding information and its environment". 2nd ed. New York: Neal-Schuman Publishers, 2007. Text.