SpringerLink (Online service), Willems, J. C., Nijmeijer, H., & Schumacher, J. M. (1989). Three decades of mathematical system theory: A collection of surveys at the occasion of the 50th birthday of Jan C. Willems. Springer-Verlag.
Chicago Style (17th ed.) CitationSpringerLink (Online service), Jan C. Willems, H. Nijmeijer, and J. M. Schumacher. Three Decades of Mathematical System Theory: A Collection of Surveys at the Occasion of the 50th Birthday of Jan C. Willems. Berlin ; New York: Springer-Verlag, 1989.
MLA (9th ed.) CitationSpringerLink (Online service), et al. Three Decades of Mathematical System Theory: A Collection of Surveys at the Occasion of the 50th Birthday of Jan C. Willems. Springer-Verlag, 1989.
Warning: These citations may not always be 100% accurate.