Dyfyniad APA
Fogelin, R. J. (1978). Understanding arguments: An introduction to informal ligic. HBJ.
Dyfyniad Arddull Chicago
Fogelin, Robert J. Understanding Arguments: An Introduction to Informal Ligic. New York: HBJ, 1978.
Dyfyniad MLA
Fogelin, Robert J. Understanding Arguments: An Introduction to Informal Ligic. HBJ, 1978.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.