- Author: Elaine J Marmel, Diane Koers
- Language: English
- Author: Elaine J Marmel, Diane Koers
- Language: English
- Author: Elaine J Marmel, Diane Koers
- Language: English
- Author: Diane Koers
- Language: English
- Year: 2011
- Author: Diane Koers
- Language: English
- Year: 2010
- Author: Diane Koers
- Language: English
- Year: 2001
- Author: Diane Koers
- Language: English
- Year: 2010
- Author: Diane Koers
- Language: English
- Year: 2006
- Author: Elaine J. Marmel Diane Koers
- Language: English
- Year: 2004
- Author: Diane Koers
- Language: English
- Year: 2002