- Author: Earl D. Rainville V, Víctor Hugo Ibarra Mercado, Richard E. Bedient, Oscar Alfredo Palmas Velasco, Phillip E. Bedient
- Language: Spanish
- Year: 1998
- Author: Earl D. Rainville Phillip E. Bedient Richard E. Bedient
- Language: English
- Year: 1997
- Author: Earl D. Rainville Phillip E. Bedient Richard E. Bedient
- Language: English
- Year: 1997