Kelly, Lucie Young
McGraw-Hill, 1999
Buku Teks
JOel, Lucille A., author
McGraw-Hill, 2003
Buku Teks
JOel, Lucille A.
McGraw-Hill, 1999
Buku Teks
Yuling Pan, author
Blackwell publishers, 2002
Buku Teks
Pierce, Carl A., author
Thomson/West, c2011.
Buku Teks