- Author: Vaughan Brendan
- Language: English
- Year: 2006
- Author: Horobin Wendy, Bridgman Roger Francis
- Language: English
- Year: 2011
- Author: Armstrong Kate J., Daniels Patricia, Garnett Olivia, Hogan John
- Language: English
- Year: 2015
- Author: Bathroom Readers� Institute
- Language: English
- Year: 2013