APA-referens (7:e uppl.)

Bliss, G. A. (1925). Calculus of variations (1a. ed.). Mathematical Association of America.

Chicago-referens (17:e uppl.)

Bliss, Gilbert Ames. Calculus of Variations. 1a. ed. LaSalle: Mathematical Association of America, 1925.

MLA-referens (9:e uppl.)

Bliss, Gilbert Ames. Calculus of Variations. 1a. ed. Mathematical Association of America, 1925.