New York : John Wiley & Sons, 1970
Second edition.

New York, Wiley 1968

New York : Guilford Press, 2000

New York : Viking Press, 1971

Springfield, Ill., Thomas 1967

New York : W.H. Freeman and Company, 1987

Madison, Wis. : University of Wisconsin Press, 1986

Cambridge, UK ; New York : Cambridge University Press, 1998

[New York], [Social Science Research Council], 1953

New York, Academic Press, 1973

London ; Newbury Park : Sage Publications, 1991

New York, The Ronald Press Company 1944

Philadelphia, PA : Psychology Press, 2000

[New York] New American Library 1961

Lincoln, Neb. : University of Nebraska Press, 1977

New York : McGraw-Hill, 1993

al-Qāhirah : al-Hayʼah al-Miṣrīyah al-ʻĀmmah lil-Kitāb, 2021
al-Ṭabʻah al-ūlá.

London, Allen & Unwin, 1967

Cambridge, UK ; New York : Cambridge University Press, 2010

New York : Plenum, 1985