APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

Troutman, John L., and W. Hrusa. Variational Calculus with Elementary Convexity. New York [etc.]: Springer, 1983.

MLA (9th ed.) Citation

Troutman, John L., and W. Hrusa. Variational Calculus with Elementary Convexity. Springer, 1983.