Hutahaean, E.
"Jakarta: Gramedia, 1980",
Buku Teks
Universitas Katolik Parahiyangan, {s.a}
Majalah, Jurnal, Buletin
edited by Christopher T.H. Baker, Geoffrey F. Miller
Academic Press, 1982
Buku Teks
Hanifati Nur Shabrina
Fakultas Teknik Universitas Indonesia, 2016
UI - Tesis (Membership)
Hochstadt, Harry
John Wiley & Sons, 1973
Buku Teks