Steingass, F., author
Gaurav Publishing House, 1986
Buku Referensi
Steingass, F.
New Delhi : Gaurav Publishing House, 1986,
Buku Referensi
Abboud, Peter F, author
Cambridge University Press, 1983
eBooks
Cowan, David, author
Cambridge At The University , 1958
Buku Teks
Johnny Tjia, author
University of Indonesia, Faculty of Humanities, 2015
Artikel Jurnal