Cita APA (7th ed.)
Herschel, J. F. W., & Fine, A. (1987). A preliminary discourse on the study of natural philosophy. University of Chicago Press.
Cita Chicago (17th ed.)
Herschel, John F. W., i Arthur Fine. A Preliminary Discourse on the Study of Natural Philosophy. Chicago: University of Chicago Press, 1987.
Cita MLA (9th ed.)
Herschel, John F. W., i Arthur Fine. A Preliminary Discourse on the Study of Natural Philosophy. University of Chicago Press, 1987.
Atenció: Aquestes cites poden no estar 100% correctes.