APA (7th ed.) Citation

Nicolai, G. F. (1919). The biology of war / by G.F. Nicolai. Dent.

Chicago Style (17th ed.) Citation

Nicolai, G. F. The Biology of War / by G.F. Nicolai. Dent, 1919.

MLA (9th ed.) Citation

Nicolai, G. F. The Biology of War / by G.F. Nicolai. Dent, 1919.

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