APA (7th ed.) Citation

Preston, R. N. (1972). Historical early Oregon: Early forts, old mines, old town sites. Western Guide Publishers.

Chicago Style (17th ed.) Citation

Preston, Ralph N. Historical Early Oregon: Early Forts, Old Mines, Old Town Sites. Corvallis, Or.: Western Guide Publishers, 1972.

MLA (9th ed.) Citation

Preston, Ralph N. Historical Early Oregon: Early Forts, Old Mines, Old Town Sites. Western Guide Publishers, 1972.