Tung, Ta-Lin
Foreign Languages Press, 1959
Buku Teks
Barrow, Christopher J.
Essex Longman Scientific & Technical, 1987
Buku Teks
by Andrew Schmitz, P. Lynn Kennedy, Troy G. Schmitz
Emerald, 2017
eBooks
Kasprzak, Zofia
Task, 2017
Artikel Jurnal
Wong, Lung-Fai
Minneapolis University of Minnesota 1987,
Buku Teks