Lass, Roger, author
IKIP Semarang Press , 1984
Buku Teks
Clark, John, author
Blackwell, 1995
Buku Teks
Wise, Claude Merton
Prentice-Hall, 1957
Buku Teks
Zsiga, Elizabeth C., author
West Sussex Wiley-Blackwell, 2013
Buku Teks
edited by John A. Goldsmith
Blackwell , 1999
Buku Teks