APA (7th ed.) Citation

Kroll, H. H. (1947). Darker grows the valley. Bobbs-Merrill Co..

Chicago Style (17th ed.) Citation

Kroll, Harry Harrison. Darker Grows the Valley. Indianapolis: Bobbs-Merrill Co., 1947.

MLA (9th ed.) Citation

Kroll, Harry Harrison. Darker Grows the Valley. Bobbs-Merrill Co., 1947.

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