APA (7e ed.) Bronvermelding

Swift , P. W. (1969). General Psychology (ed.). McGraw- Hill Book Co..

Chicago (17e ed.) Bronvermelding

Swift , Porter W. General Psychology. ed. New York: McGraw- Hill Book Co., 1969.

MLA (9e ed.) Bronvermelding

Swift , Porter W. General Psychology. ed. McGraw- Hill Book Co., 1969.