APA (7th ed.) Citation

Cressman, L. S. (1937). Petroglyphs of Oregon. University of Oregon.

Chicago Style (17th ed.) Citation

Cressman, Luther Sheeleigh. Petroglyphs of Oregon. Eugene: University of Oregon, 1937.

MLA (9th ed.) Citation

Cressman, Luther Sheeleigh. Petroglyphs of Oregon. University of Oregon, 1937.

Warning: These citations may not always be 100% accurate.