Παραπομπή σε μορφή APA (7η εκδ.)

Carl, S., Le, V. K., & Motreanu, D. (2007). Nonsmooth variational problems and their inequalities: Comparison principles and applications. Springer.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Carl, S., Vy Khoi Le, και D. Motreanu. Nonsmooth Variational Problems and Their Inequalities: Comparison Principles and Applications. New York: Springer, 2007.

Παραπομπή σε μορφή MLA (9th εκδ.)

Carl, S., et al. Nonsmooth Variational Problems and Their Inequalities: Comparison Principles and Applications. Springer, 2007.