- Author: David V. Huntsberger, Patrick Billingsley
- Language: English
- Year: 1981
- Author: David V. Huntsberger, Patrick Billingsley
- Language: English
- Year: 1977
- Author: PATRICK BILLINGSLEY
- Language: English
- Year: 1999
- Author: Patrick Billingsley
- Language: English
- Year: 2012
- Author: Patrick Billingsley
- Language: English
- Year: 2012
- Author: Patrick Billingsley
- Language: English
- Year: 1987
- Author: Patrick Billingsley
- Language: English
- Year: 2012
- Author: Patrick Billingsley
- Language: English
- Year: 2012
- Author: Patrick Billingsley
- Language: English
- Year: 1995
- Author: Patrick Billingsley(auth.)
- Language: English
- Year: 1999