Cita APA (7th ed.)
Hurley, P. J. (1985). A concise introduction to logic (2 ed.). Wadsworth.
Cita Chicago (17th ed.)
Hurley, Patrick J. A Concise Introduction to Logic. 2 ed. Belmont: Wadsworth, 1985.
Cita MLA (9th ed.)
Hurley, Patrick J. A Concise Introduction to Logic. 2 ed. Wadsworth, 1985.
Atenció: Aquestes cites poden no estar 100% correctes.