Stephens, W. L. (1941). Rifle marksmanship. A.S. Barnes & Company.
Lua i Stíl Chicago (17ú heag.)Stephens, William Lyndall. Rifle Marksmanship. New York: A.S. Barnes & Company, 1941.
Lua MLA (8ú heag.)Stephens, William Lyndall. Rifle Marksmanship. A.S. Barnes & Company, 1941.
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