APA-ийн эшлэл(7 дахь хэвлэлт)

Cox, T. R. (1988). The park builders: A history of state parks in the Pacific northwest. University of Washington Press.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Cox, Thomas R. The Park Builders: A History of State Parks in the Pacific Northwest. Seattle: University of Washington Press, 1988.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Cox, Thomas R. The Park Builders: A History of State Parks in the Pacific Northwest. University of Washington Press, 1988.