L., P., C., Troy, N., H.(1990).Digital control system analysis and design / Charles L. Phillips, and H. Troy Nagle (2nd.ed.).Englewood Cliffs:Prentice-Hall, Inc..
Gaya MLA
Phillips, Charles, L.., Nagle, H., Troy."Digital control system analysis and design / Charles L. Phillips, and H. Troy Nagle".2nd.ed.Englewood Cliffs:Prentice-Hall, Inc.,1990.Textbook.