Barzun, ., & Graff, H. F. (1957). The modern researcher. Harcourt.
Citación estilo ChicagoBarzun, , and Henry F. Graff. The Modern Researcher. New York: Harcourt, 1957.
Cita MLABarzun, , and Henry F. Graff. The Modern Researcher. Harcourt, 1957.
Warning: These citations may not always be 100% accurate.