APA (7th ed.) Citation

Steel, W. G. (2011). The Mountains of Oregon. Project Gutenberg.

Chicago Style (17th ed.) Citation

Steel, William Gladstone. The Mountains of Oregon. Project Gutenberg, 2011.

MLA (9th ed.) Citation

Steel, William Gladstone. The Mountains of Oregon. Project Gutenberg, 2011.

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