Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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