APA (7th ed.) Citation

Hermann, R. (1977). Differential geometry and the calculus of variations (2d ed.). Math Sci Press.

Chicago Style (17th ed.) Citation

Hermann, Robert. Differential Geometry and the Calculus of Variations. 2d ed. Brookline, Mass.: Math Sci Press, 1977.

MLA (9th ed.) Citation

Hermann, Robert. Differential Geometry and the Calculus of Variations. 2d ed. Math Sci Press, 1977.