Ardales, V. B. (2008). Logic towards critical thinking and reasoning (3rd ed.). Educational Pub. House.
Chicago-Zitierstil (17. Ausg.)Ardales, Venancio B. Logic Towards Critical Thinking and Reasoning. 3rd ed. Manila: Educational Pub. House, 2008.
MLA-Zitierstil (9. Ausg.)Ardales, Venancio B. Logic Towards Critical Thinking and Reasoning. 3rd ed. Educational Pub. House, 2008.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.