Sabino, Catherine, author
Thomes and Hudson, 1986
Buku Referensi
Blackwell Publishing, 2007
Buku Teks
Bajard, Sophie
Terrail, 1993
Buku Teks
Bliss, Sara, author
Page One Publishing, 2003
Buku Referensi
Murphy, Beverly, author
McGraw-Hill, 2005
Buku Referensi