Wagstaff, Liz, author
Quadrille, 1999
Buku Referensi
Brookes, John, author
Ward Lock, 1996
Buku Referensi
Godsey, Lisa, author
Fairchild Books, 2010
Buku Teks
Aude, Karen, author
Rockport Publishers, 1999.
Buku Teks
Rizka Almadea Anindita, author
2017
UI - Skripsi (Membership)