Gaya APA
Kwakernaak, H., Sivan, R. (1991).
Modern signals and systems .
United States of America:
Prentice Hall.
Gaya MLA
Kwakernaak, Huibert.., Sivan, Raphael..
"Modern signals and systems".
United States of America:
Prentice Hall,
1991.
Printed Book.