Cita APA (7th ed.)

Barzun, ., & Graff, H. F. (1957). The modern researcher. Harcourt.

Cita Chicago (17th ed.)

Barzun, , i Henry F. Graff. The Modern Researcher. New York: Harcourt, 1957.

Cita MLA (9th ed.)

Barzun, , i Henry F. Graff. The Modern Researcher. Harcourt, 1957.