Cita APA

Barzun, J., & Graff, H. F. (1970). Modern researcher. Harcourt Brace Jovanovich.

Chicago Edition Citation

Barzun, Jacques, i Henry F. Graff. Modern Researcher. New York: Harcourt Brace Jovanovich, 1970.

Cita MLA

Barzun, Jacques, i Henry F. Graff. Modern Researcher. Harcourt Brace Jovanovich, 1970.