Warner, Oliver
B.T. Batsford, 1959
Buku Teks
by Aleksey Maksimovich Gor`kiy; translated by Margaret Wettlin
Foreign Languages Publishing House, [date of publication not identified]
Buku Teks
McGee, Andrew, author
Sweet & Maxwell , 2010
Buku Teks
Burke, W. Warner, author
Addison-Wesley, 1987
Buku Teks
Warne, Steven B.
Prentice-Hall, 1995
Buku Teks