APA-ийн эшлэл(7 дахь хэвлэлт)

Ronald, A. (2003). Reader of the purple sage: Essays on Western writers and environmental literature. University of Nevada Press.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Ronald, Ann. Reader of the Purple Sage: Essays on Western Writers and Environmental Literature. Reno: University of Nevada Press, 2003.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Ronald, Ann. Reader of the Purple Sage: Essays on Western Writers and Environmental Literature. University of Nevada Press, 2003.