Cita APA

Rektorys, K. (1980). Variational methods in mathematics, science, and engineering (2nd ed.). D. Reidel Pub. Co..

Citación estilo Chicago

Rektorys, Karel. Variational Methods in Mathematics, Science, and Engineering. 2nd ed. Dordrecht, Holland ; Boston, U.S.A.: D. Reidel Pub. Co., 1980.

Cita MLA

Rektorys, Karel. Variational Methods in Mathematics, Science, and Engineering. 2nd ed. D. Reidel Pub. Co., 1980.