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- Language: English
- Year: 1998
- Author: Jean Stilwell Peccei
- Language: English
- Year: 1999
- Author: Glynis Cousin
- Language: English
- Year: 2009
- Author: Carol H. Rounds
- Language: English
- Year: 2009
- Author: Stephen C. Berkwitz Juliane Schober Claudia Brown
- Language: English
- Year: 2009
- Author: Jean Stilwell Peccei
- Language: English
- Year: 1999
- Author: Ng Bee Chin & Gillian Wigglesworth
- Language: English
- Year: 2007
- Author: Michael Allan Jones
- Language: English
- Year: 1993
- Author: Howard Jackson
- Language: English
- Year: 2002
- Author: W. R. O'donnell and Loreto Todd
- Language: English
- Year: 1991