Cita APA (7a ed.)

Giaquinta, M., & Hildebrandt, S. (1994). Calculus of variations. Springer-Verlag.

Cita Chicago Style (17a ed.)

Giaquinta, Mariano, y Stefan Hildebrandt. Calculus of Variations. Berlin [etc.]: Springer-Verlag, 1994.

Cita MLA (9a ed.)

Giaquinta, Mariano, y Stefan Hildebrandt. Calculus of Variations. Springer-Verlag, 1994.