Gaya APA

Birdsall, S, S., Florin, J. (1992). Garis Besar Geografi Amerika (Ed. 4). Atlas O merian Agriculture: John Wiley & Sons Inc.

Gaya MLA

Birdsall, Stephen, S., Florin, John. "Garis Besar Geografi Amerika". Ed. 4 Atlas O merian Agriculture: John Wiley & Sons Inc, 1992. Buku TP.