Williams, C. (1980). Bridge of the gods, mountains of fire: A return to the Columbia Gorge. Friends of the Earth ; Elephant Mountain Arts.
Cita Chicago Style (17a ed.)Williams, Chuck. Bridge of the Gods, Mountains of Fire: A Return to the Columbia Gorge. New York : White Salmon, [Wash.]: Friends of the Earth ; Elephant Mountain Arts, 1980.
Cita MLA (8a ed.)Williams, Chuck. Bridge of the Gods, Mountains of Fire: A Return to the Columbia Gorge. Friends of the Earth ; Elephant Mountain Arts, 1980.
Precaución: Estas citas no son 100% exactas.