Cita APA (7th ed.)

Hurley & Patrick J. (2006). A Concise Introduction to Logic (9th ed.). Thomson Wadsworth.

Cita Chicago (17th ed.)

Hurley i Patrick J. A Concise Introduction to Logic. 9th ed. Belmont, CA: Thomson Wadsworth, 2006.

Cita MLA (9th ed.)

Hurley i Patrick J. A Concise Introduction to Logic. 9th ed. Thomson Wadsworth, 2006.