Harman, Carter, author
Dell Publishing, 1956
Buku Teks
Andy Bennett, Steve Waksman
SAGE, 2015
Buku Teks
Schleifer, Ronald, author
Cambridge University Press, 2011
eBooks
edited by Sheila Whiteley
Routledge , 1997
Buku Teks
Fowler, David C., author
Duke University Press, 1968
Buku Teks