Cita APA (7th ed.)
Hurley, P. J. (1988). A concise introduction to logic (3rd ed.). Wadsworth.
Cita Chicago (17th ed.)
Hurley, Patrick J. A Concise Introduction to Logic. 3rd ed. Belmont: Wadsworth, 1988.
Cita MLA (9th ed.)
Hurley, Patrick J. A Concise Introduction to Logic. 3rd ed. Wadsworth, 1988.
Atenció: Aquestes cites poden no estar 100% correctes.