Dyfyniad APA

Ferriss, A. L. (1969). Indicators of trends in American education. Russell Sage Foundation.

Dyfyniad Arddull Chicago

Ferriss, Abbott L. Indicators of Trends in American Education. New York: Russell Sage Foundation, 1969.

Dyfyniad MLA

Ferriss, Abbott L. Indicators of Trends in American Education. Russell Sage Foundation, 1969.

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