APA način citiranja

Showalter, R. E. (1977). Hilbert space methods for partial differential equations.

Čikaški stil citiranja

Showalter, R E. Hilbert Space Methods for Partial Differential Equations. London, Pitman, 1977.

MLA način citiranja

Showalter, R E. Hilbert Space Methods for Partial Differential Equations. 1977.