Introduction to the Science of Sociology

by Robert Ezra Park; E. W. Burgess

(6) Ellwood, Charles A. Sociology and Its Psychological Aspects. New York and London, 1912.

B. Nominalists

(1) Tarde, Gabriel. Les Lois de l'imitation. Paris, 1895.

(2) Giddings, Franklin H. The Principles of Sociology. New York, 1896.

(3) Ross, Edward Alsworth. The Principles of Sociology. New York, 1920.

C. Collective Behavior

(1) Le Bon, Gustave. The Crowd. A study of the popular mind. New York, 1903.

(2) Sighele, Scipio. Psychologie des sectes. Paris, 1898.

(3) Tarde, Gabriel. L'Opinion et la foule. Paris, 1901.

(4) McDougall, William. The Group Mind. Cambridge, 1920.