APA (7th ed.) Citation

Oregon Historical Society, Wilson, F. W., & Stewart, E. K. (1969). Steamboat days on the rivers. Oregon Historical Society.

Chicago Style (17th ed.) Citation

Oregon Historical Society, Fred W. Wilson, and Earle K. Stewart. Steamboat Days on the Rivers. Portland: Oregon Historical Society, 1969.

MLA (9th ed.) Citation

Oregon Historical Society, et al. Steamboat Days on the Rivers. Oregon Historical Society, 1969.