Dyfyniad APA

Riegel, R. E. (1948). Tests for United States of America. C. Scribner's Sons.

Dyfyniad Arddull Chicago

Riegel, Robert Edgar. Tests for United States of America. New York : Chicago [etc.]: C. Scribner's Sons, 1948.

Dyfyniad MLA

Riegel, Robert Edgar. Tests for United States of America. C. Scribner's Sons, 1948.

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