Cita APA (7th ed.)

Hengartner, W., & Theodorescu, R. j. a. (1973). Concentartion functions. Academic Press.

Cita Chicago (17th ed.)

Hengartner, Walter, i Radu joint auth Theodorescu. Concentartion Functions. New York: Academic Press, 1973.

Cita MLA (9th ed.)

Hengartner, Walter, i Radu joint auth Theodorescu. Concentartion Functions. Academic Press, 1973.