Gaya APA
KNIGHT, R, L. et al (2002).
Ranching West of the 100th Meridian : Culture, Ecology and Economics .
Washington:
Island Press.
Gaya MLA
KNIGHT, Richard, L.. et al.
"Ranching West of the 100th Meridian : Culture, Ecology and Economics".
Washington:
Island Press,
2002.
Text.