Judd, Dorothy H., author
Scott, Foresman, 1984
Buku Teks
Susan K. Kovar ... [and others]
McGraw-Hill, 2012
Buku Teks
Stewig, John Warren, author
Wadsworth, 1995
Buku Referensi
Moursund, David G., author
John Wiley & Sons, 1981
Buku Teks SO
D`Angelo, Henry, author
Byte Books, 1981
Buku Teks