- Author: Paul G. Hiebert
- Language: English
- Year: 1999
- Author: Paul G. Hiebert
- Language: English
- Year: 1971
- Author: Paul G. Hiebert
- Language: English
- Year: 2009
- Author: Paul G. Hiebert
- Language: English
- Year: 2009
- Author: Paul G. Hiebert
- Language: Portuguese
- Year: 1999