Cita APA (7th ed.)

Bliss, G. A. (1925). Calculus of variations. Pub. for the Mathematical Association of America by the Open Court Publishing Company.

Cita Chicago (17th ed.)

Bliss, Gilbert Ames. Calculus of Variations. La Salle: Pub. for the Mathematical Association of America by the Open Court Publishing Company, 1925.

Cita MLA (9th ed.)

Bliss, Gilbert Ames. Calculus of Variations. Pub. for the Mathematical Association of America by the Open Court Publishing Company, 1925.