McClellan, J. E., & Dorn, H. (2006). Science and technology in world history: An introduction (2nd ed.). Johns Hopkins University Press.
Lua i Stíl Chicago (17ú heag.)McClellan, James E., agus Harold Dorn. Science and Technology in World History: An Introduction. 2nd ed. Baltimore: Johns Hopkins University Press, 2006.
Lua MLA (8ú heag.)McClellan, James E., agus Harold Dorn. Science and Technology in World History: An Introduction. 2nd ed. Johns Hopkins University Press, 2006.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.