Drs. Ronald Hasibuan, author
Universitas HKBP Nonmensen, 2018
Artikel Jurnal
Proakis, John G., author
Cengage Learning, 2013
Buku Teks
Ransom, Robert, author
John Wiley & Sons, 1981
Buku Teks
Agus Supriatna, author
Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Indonesia, 2011
UI - Skripsi Open
edited by David H. Laidlaw and Anna Vilanova
Springer, 2012
eBooks