APA (7th ed.) Citation

Hough, R. B. (1907). Handbook of the trees of the northern states and Canada east of the Rocky Mountains. The author.

Chicago Style (17th ed.) Citation

Hough, Romeyn Beck. Handbook of the Trees of the Northern States and Canada East of the Rocky Mountains. Lowville, N.Y.: The author, 1907.

MLA (9th ed.) Citation

Hough, Romeyn Beck. Handbook of the Trees of the Northern States and Canada East of the Rocky Mountains. The author, 1907.