
- Author: Ernst C. Helmreich
- Language: English
- Year: 1964

- Author: Kyle C. Sessions
- Language: English
- Year: 1968

- Author: Harrison M. Wright
- Language: English
- Year: 1961

- Author: Samuel M. Osgood
- Language: English
- Year: 1972

- Author: Gerald M. Straka
- Language: English
- Year: 1966

- Author: Alfred F. Havighurst
- Language: English
- Year: 1958

- Author: Robert J. Christen Harold E.Hazelton
- Language: English
- Year: 1969

- Author: Robert M. Kingdon Robert Linder
- Language: English
- Year: 1970

- Author: De Lamar Jensen
- Language: English
- Year: 1959

- Author: John L. Snell
- Language: English
- Year: 1959