APA (7th ed.) Citation

Erikson, E. H., & Holton, G. J. (1972). The Twentieth-century sciences: Studies in the biography of ideas. Norton.

Chicago Style (17th ed.) Citation

Erikson, Erik H., and Gerald James Holton. The Twentieth-century Sciences: Studies in the Biography of Ideas. New York: Norton, 1972.

MLA (9th ed.) Citation

Erikson, Erik H., and Gerald James Holton. The Twentieth-century Sciences: Studies in the Biography of Ideas. Norton, 1972.