Style de citation APA (7e éd.)

Troutman, J. L., & Hrusa, W. (1983). Variational calculus with elementary convexity. Springer-Verlag.

Style de citation Chicago (17e éd.)

Troutman, John L., et William Hrusa. Variational Calculus with Elementary Convexity. New York: Springer-Verlag, 1983.

Style de citation MLA (8e éd.)

Troutman, John L., et William Hrusa. Variational Calculus with Elementary Convexity. Springer-Verlag, 1983.