1. Abel Theodore, Review, "American Journal of Psychology" 1928, t. 41, nr 4, s. 665-666.
2. Abel Theodore, Systematic Sociology in Germany. Critical Analysis of Some Attempts to Establish Sociology as an Independent Science, Columbia University Press, New York 1929.
3. Abel Theodore, Protestant Home Missions to Catholic Immigrants, Institute of Social and Religious Research, New York 1933.
4. Abel Theodore, Review "American Sociological Review" 1937, t. 2, s. 283-286.
5. Abel Theodore, Why Hitler Came into Power, Prentice-Hall, New York 1938.