Benjamin, C. H., & Hoffman, J. D. (1913). Machine design. H. Holt and Company.
Lua i Stíl Chicago (17ú heag.)Benjamin, Charles Henry, agus James D. Hoffman. Machine Design. New York: H. Holt and Company, 1913.
Lua MLA (8ú heag.)Benjamin, Charles Henry, agus James D. Hoffman. Machine Design. H. Holt and Company, 1913.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.