APA (7e ed.) Bronvermelding

Rektorys, K., & Basch, M. (1977). Variational methods in mathematics, science, and engineering. D. Reidel Pub. Co.

Chicago (17e ed.) Bronvermelding

Rektorys, Karel, en Michael Basch. Variational Methods in Mathematics, Science, and Engineering. Dordrecht ; Boston: D. Reidel Pub. Co, 1977.

MLA (8e ed.) Bronvermelding

Rektorys, Karel, en Michael Basch. Variational Methods in Mathematics, Science, and Engineering. D. Reidel Pub. Co, 1977.