Tohutoro APA (7th ed.)

Fox, C. (1987). An introduction to the calculus of variations. Dover.

Tohutoru Kātū Chicago (17th ed.)

Fox, Charles. An Introduction to the Calculus of Variations. Nueva York: Dover, 1987.

Tohutoro MLA (9th ed.)

Fox, Charles. An Introduction to the Calculus of Variations. Dover, 1987.