APA (7th ed.) Citation

Walker, E., Phillips, P. C., & Lewis, W. S. (1930). The Oregon missions as shown in the Walker letters, 1839-1851.

Chicago Style (17th ed.) Citation

Walker, Elkanah, Paul C. Phillips, and William S. Lewis. The Oregon Missions as Shown in the Walker Letters, 1839-1851. [Missoula, Mont, 1930.

MLA (8th ed.) Citation

Walker, Elkanah, et al. The Oregon Missions as Shown in the Walker Letters, 1839-1851. 1930.

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