APA (7th ed.) Citation

SpringerLink (Online service), Lucas, W. F., Roberts, F. S., & Thrall, R. M. (1983). Discrete and system models. Springer-Verlag.

Chicago Style (17th ed.) Citation

SpringerLink (Online service), William F. Lucas, Fred S. Roberts, and Robert McDowell Thrall. Discrete and System Models. New York: Springer-Verlag, 1983.

MLA (9th ed.) Citation

SpringerLink (Online service), et al. Discrete and System Models. Springer-Verlag, 1983.