Cita APA (7th ed.)

Barker, S. F. (1974). The Elements of Logic (2nd ed.). McGraw-Hill.

Cita Chicago (17th ed.)

Barker, Stephen F. The Elements of Logic. 2nd ed. New York: McGraw-Hill, 1974.

Cita MLA (9th ed.)

Barker, Stephen F. The Elements of Logic. 2nd ed. McGraw-Hill, 1974.