Cita APA (7th ed.)

Chicago University. Department of Mathematics. (1930). Contributions to the calculus of variations.(1930). The University of Chicago.

Cita Chicago (17th ed.)

Chicago University. Department of Mathematics. Contributions to the Calculus of Variations.(1930). Chicago: The University of Chicago, 1930.

Cita MLA (9th ed.)

Chicago University. Department of Mathematics. Contributions to the Calculus of Variations.(1930). The University of Chicago, 1930.