MLA

Riesman, David. The Lonely Crowd: a Study of the Changing American Character. New Haven: Yale University Press, 1950.

APA

Riesman, D. (1950). The lonely crowd: a study of the changing American character. New Haven: Yale University Press.

Chicago

Riesman, David The Lonely Crowd: a Study of the Changing American Character. New Haven: Yale University Press, 1950.