Citazione Stile APA (7a Edizione)

Richards, J. A. (1983). Analysis of periodically time-varying systems. Springer-Verlag.

Citazione stile Chigago Style (17a edizione)

Richards, J. A. Analysis of Periodically Time-varying Systems. Berlin, New York: Springer-Verlag, 1983.

Citatione MLA (9a ed.)

Richards, J. A. Analysis of Periodically Time-varying Systems. Springer-Verlag, 1983.