Wertheim, Jane
Usborne Publishing, 1986
Buku Referensi
Charle, Suzanne, author
Collins, 1990
Buku Referensi
edited by Tom Lissauer, Will Carroll; foreword by Sir Alan Craft
Elsevier, 2018
Buku Teks
Saunders, 2003
Buku Teks
Cohen, Barbara Janson, author
Wolters Kluwer, 2008
Buku Teks