APA stil citiranja

Becker, M. (1964). The principles and applications of variational methods: The principles and applications of variational methods (1. izd.). Mass. MIT Press.

Chicago stil citiranja

Becker, Martin. The principles and applications of variational methods: The principles and applications of variational methods. 1. izd. Mass. MIT Press, 1964.

MLA stil citiranja

Becker, Martin. The principles and applications of variational methods: The principles and applications of variational methods. 1. izd. Mass. MIT Press, 1964.