Bliss, G. A. (1925). Calculus of variations. Pub. for the Mathematical Association of America by the Open Court Publishing Company.
Lua i Stíl Chicago (17ú heag.)Bliss, Gilbert Ames. Calculus of Variations. La Salle: Pub. for the Mathematical Association of America by the Open Court Publishing Company, 1925.
Lua MLA (9ú heag.)Bliss, Gilbert Ames. Calculus of Variations. Pub. for the Mathematical Association of America by the Open Court Publishing Company, 1925.
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