Dyfyniad APA

Toulmin , S., & Rieke , R. . ;. . J.. (1979). An introduction to reasoning. Macmilan Publishing Co.

Dyfyniad Arddull Chicago

Toulmin , Stephen, and Richard ; Janik Rieke. An Introduction to Reasoning. New York: Macmilan Publishing Co, 1979.

Dyfyniad MLA

Toulmin , Stephen, and Richard ; Janik Rieke. An Introduction to Reasoning. Macmilan Publishing Co, 1979.

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