Παραπομπή σε μορφή APA (7η εκδ.)

Sperb, R. P. (1981). Maximum principles and their applications. Academic Press.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Sperb, Rene Peter. Maximum Principles and Their Applications. New York: Academic Press, 1981.

Παραπομπή σε μορφή MLA (9th εκδ.)

Sperb, Rene Peter. Maximum Principles and Their Applications. Academic Press, 1981.