Dyfyniad APA

Schwartz, T. (1980). The art of logical reasoning. Random House.

Dyfyniad Arddull Chicago

Schwartz, Thomas. The Art of Logical Reasoning. New York: Random House, 1980.

Dyfyniad MLA

Schwartz, Thomas. The Art of Logical Reasoning. Random House, 1980.

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