Cita APA (7a ed.)

Newman, J. H., & Gilson, É. (1955). An essay in aid of a grammar of assent. Image Books.

Cita Chicago Style (17a ed.)

Newman, John Henry, y Étienne Gilson. An Essay in Aid of a Grammar of Assent. New York: Image Books, 1955.

Cita MLA (9a ed.)

Newman, John Henry, y Étienne Gilson. An Essay in Aid of a Grammar of Assent. Image Books, 1955.