Παραπομπή APA

Barker, S. F. (1965). The elements of logic. Mc Graw - Hill.

Παραπομπή Chicago Style

Barker, Stephen F. The Elements of Logic. New York: Mc Graw - Hill, 1965.

Παραπομπή MLA

Barker, Stephen F. The Elements of Logic. Mc Graw - Hill, 1965.