Gaya APA

Birdsall, S, S., Florin, J. (1992). Garis Besar Geografi Amerika (Ed. 4). Hoboke, NJ, USA: John Wiley & Sons, Inc.

Gaya MLA

Birdsall, Stephen, S.., Florin, John. "Garis Besar Geografi Amerika". Ed. 4 Hoboke, NJ, USA: John Wiley & Sons, Inc, 1992. Text.