Baldwin, Lillian, author
Silver Burdett, 1948
Buku Teks
Ewen, David, author
Prentice Hall, 1968
Buku Referensi
Kamien, Roger, author
McGraw-Hill, 2011
Buku Teks
Kamien, Roger, author
McGraw-Hill, 1996
Buku Teks
Kamien, Roger, author
McGraw-Hill, 1998
Buku Teks