Hermann,Robert. (1968). Differential geometry and the calculus of variations. Academic Press.
Style de citation Chicago (17e éd.)Hermann,Robert. Differential Geometry and the Calculus of Variations. New York: Academic Press, 1968.
Style de citation MLA (9e éd.)Hermann,Robert. Differential Geometry and the Calculus of Variations. Academic Press, 1968.
Attention : ces citations peuvent ne pas être correctes à 100%.