- Author: Catherine E. Housecroft Alan G. Sharpe
- Language: Spanish
- Year: 2006
- Author: Catherine E. Housecroft Alan G. Sharpe
- Language: Spanish
- Year: 2006
- Author: Yvonne Gaudelius Peg Speirs
- Language: English
- Year: 2002
- Author: Toby Fulwiler Alan R. Hayakawa
- Language: English
- Year: 2006
- Author: John Storey
- Language: English
- Year: 2006
- Author: Rita Wicks-Nelson
- Language: Spanish
- Year: 2008
- Author: Thomas Engel Gary Drobny Philip J. Reid
- Language: English
- Year: 2007
- Author: Thomas Jewell
- Language: English
- Year: 2004
- Author: Stephen P. Robbins, Timothy A. Judge, Filipe Sobral
- Language: Portuguese
- Year: 2010
- Author: Antonio Celso Collaro
- Language: Portuguese
- Year: 2007