Dyfyniad APA
Sommerfeld, A. (1950). Lectures on theoretical physics. Academic Press.
Dyfyniad Arddull Chicago
Sommerfeld, Arnold. Lectures on Theoretical Physics. New York: Academic Press, 1950.
Dyfyniad MLA
Sommerfeld, Arnold. Lectures on Theoretical Physics. Academic Press, 1950.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.