Artikel Jurnal
Azizah Nilam Wandira, author
Fakultas Teknik Universitas Indonesia, 2020
UI - Skripsi (Membership)
Ryan, N.J
Oxford University Press, 1970
Buku Teks
The Straits Times Press, 1971
Buku Teks
Yaman Ibrahim, author
Neoedition, 2010
Buku Referensi