APA (7th ed.) Citation

Twain, M. (1872). Roughing it. American Pub. Co. ; F.G. Gilman & Co. ;[etc., etc.].

Chicago Style (17th ed.) Citation

Twain, Mark. Roughing It. Hartford, Conn. : Chicago, Ill.: American Pub. Co. ; F.G. Gilman & Co. ;[etc., etc.], 1872.

MLA (8th ed.) Citation

Twain, Mark. Roughing It. American Pub. Co. ; F.G. Gilman & Co. ;[etc., etc.], 1872.

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