Παραπομπή σε μορφή APA (7η εκδ.)

Chicago University. Department of Mathematics. (1931). Contributions to the calculus of variations.(1931-1932). The University of Chicago.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Chicago University. Department of Mathematics. Contributions to the Calculus of Variations.(1931-1932). Chicago: The University of Chicago, 1931.

Παραπομπή σε μορφή MLA (9th εκδ.)

Chicago University. Department of Mathematics. Contributions to the Calculus of Variations.(1931-1932). The University of Chicago, 1931.