Dyfyniad APA

Fogelin, R. J. (2001). Understanding arguments: An introduction to informal logic. Fort Worth, TX: Harcourt College Publishers.

Dyfyniad Arddull Chicago

Fogelin, Robert J. Understanding Arguments: An Introduction to Informal Logic. Fort Worth, TX: Harcourt College Publishers, 2001.

Dyfyniad MLA

Fogelin, Robert J. Understanding Arguments: An Introduction to Informal Logic. Fort Worth, TX: Harcourt College Publishers, 2001.

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