French, Sally
Butterworth-Heinemann, 2001
Buku Referensi
Weirich, Thomas
South-Western, 1988
Buku Teks
Oades, Lindsay G.
Sage, 2019
Buku Teks
edited by Janet Holmes and Kirk Hazen
John Wiley & Sons, 2014
Buku Teks
edited by Zhu Hua
Wiley Blackwell, 2016
Buku Teks