APA aipamena

Friedman, A. (2010). Variational principles and free-boundary problems (Dover ed.). Dover.

Chicago Style aipamena

Friedman, Avner. Variational Principles and Free-boundary Problems. Dover ed. Mineola, N.Y: Dover, 2010.

MLA aipamena

Friedman, Avner. Variational Principles and Free-boundary Problems. Dover ed. Dover, 2010.