Armour, R. W. 1. -., & Armour, R. W. 1. -. (1967). It all started with stones and clubs: Being a short history of war and weaponry from earliest times to the present, noting the gratifying progress made by man since his first crude, small-scale efforts to do away with those who disagreed with him (1. edition.). New York: McGraw-Hill Book.

Armour, Richard Willard 1906 -, and Richard Willard 1906 - Armour. It All Started With Stones and Clubs: Being a Short History of War and Weaponry From Earliest Times to the Present, Noting the Gratifying Progress Made By Man Since His First Crude, Small-scale Efforts to Do Away With Those Who Disagreed With Him. 1. edition. New York: McGraw-Hill Book, 1967.

Armour, Richard Willard 1906 -, and Richard Willard 1906 - Armour. It All Started With Stones and Clubs: Being a Short History of War and Weaponry From Earliest Times to the Present, Noting the Gratifying Progress Made By Man Since His First Crude, Small-scale Efforts to Do Away With Those Who Disagreed With Him. 1. edition. New York: McGraw-Hill Book, 1967.