Παραπομπή APA

Giaquinta, M., & Hildebrandt, S. (1996). Calculus of variations 1. Springer.

Παραπομπή Chicago Style

Giaquinta, Mariano, και Stefan Hildebrandt. Calculus of Variations 1. Berlin ; New York: Springer, 1996.

Παραπομπή MLA

Giaquinta, Mariano, και Stefan Hildebrandt. Calculus of Variations 1. Springer, 1996.