Cita APA (7th ed.)

Roberts, A. W., & Varberg, D. E. (1973). Convex functions. Academic Press.

Cita Chicago (17th ed.)

Roberts, A. Wayne, i Dale E. Varberg. Convex Functions. New York: Academic Press, 1973.

Cita MLA (9th ed.)

Roberts, A. Wayne, i Dale E. Varberg. Convex Functions. Academic Press, 1973.