Yates, Edward D., author
Contemporary Publishing Company, 1981
Buku Teks
Giuffré, Giulia, author
Allen & Unwin, 1990
Buku Teks
DiYanni, Robert
McGraw-Hill, 2000
Buku Teks
Novakovich, Josip, author
Kaifa, 2003
Buku Teks
Perrine, Laurence, author
Harcourt, Brace College, 1992
Buku Teks