APA-ийн эшлэл(7 дахь хэвлэлт)

Preston, R. J. (1968). Rocky mountain trees: A handbook of the native species with plates and distributions maps (3a. ed.). Dover.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Preston, Richard J. Rocky Mountain Trees: A Handbook of the Native Species with Plates and Distributions Maps. 3a. ed. Nueva York: Dover, 1968.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Preston, Richard J. Rocky Mountain Trees: A Handbook of the Native Species with Plates and Distributions Maps. 3a. ed. Dover, 1968.