Hermann, R. (1968). Differential geometry and the calculus of variations. Academic Press.
Chicago Style (17th ed.) CitationHermann, Robert. Differential Geometry and the Calculus of Variations. New York: Academic Press, 1968.
MLA (9th ed.) CitationHermann, Robert. Differential Geometry and the Calculus of Variations. Academic Press, 1968.
Warning: These citations may not always be 100% accurate.