Junwei, fu, author
Wolters Kluwer, 2011
Buku Teks
Maeijer, J. M. M., author
Sijthoff & Noordhoff International, 1978
Buku Teks
Erwin Ramedhan, author
2005
Artikel Jurnal
Engels, F. E.
Foreign Languages Publishing House, 1958
Buku Teks
Rose, Saul, author
Octagon Books, 1959
Buku Teks