
- Author: Georg von Rauch
- Language: English

- Author: A.S. Walsh
- Language: English
- Year: 1984

- Author: Michael A. Persinger
- Language: English
- Year: 1980

- Author: Mark M. Lowenthal
- Language: English
- Year: 1992

- Author: Nancy Morris
- Language: English
- Year: 1995

- Author: Robert Boice
- Language: English
- Year: 1996

- Author: Yuan-li Wu Robert Sheeks
- Language: English
- Year: 1970

- Author: William E. Crowther
- Language: English
- Year: 1988

- Author: George H. Hodos
- Language: English
- Year: 1987

- Author: Alan J. Levine
- Language: English
- Year: 1992