Gear, Jolene
Cambridge university press, 2010
Buku Teks
Sharpe, Pamela J.
Barron's, 2001
Buku Teks
Sharpe, Pamela J.
Barron's Educational Series, 1995
Multimedia
Sharpe, Pamela J.
Barron's Educational Series, 1995
Multimedia
Sharpe, Pamela J.
Barron's Educational Series, 1995
Multimedia