Elfina Rozita, author
Fakultas Teknik Universitas Indonesia, 2019
UI - Tesis (Membership)
Mazumder, S.K.
McGraw-Hill Publishing Company, 1983
Buku Teks
Kay, Melvyn
Language Book Society , 1983
Buku Teks
Artikel Jurnal
Sharma, S.K.
S. Chand & Company (Pvt) LTD, 1988
Buku Teks