Dyfyniad APA

Seay, G., & Nuccetelli, S. (2012). How to think logically (2nd ed.). Pearson.

Dyfyniad Arddull Chicago

Seay, Gary, and Susana Nuccetelli. How to Think Logically. 2nd ed. Boston: Pearson, 2012.

Dyfyniad MLA

Seay, Gary, and Susana Nuccetelli. How to Think Logically. 2nd ed. Pearson, 2012.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.