Barron, Judy
Chapmann, 1992
Buku Teks
Fine, Benjamin, author
Barron's Educational Series, 1966
Buku Referensi
Barron, Randall F.
McGraw-Hill, 1966
Buku Teks
Criscito, Pat, author
Barron's Educational Series, Inc., 1999
Buku Referensi
Mays, John Barrons
Longman, 1970
Buku Teks