Dyfyniad APA

Samford, C. D., & Cottle, E. (1952). Social studies in the secondary school. McGraw Hill.

Dyfyniad Arddull Chicago

Samford, Clarence D., and Eugene Cottle. Social Studies in the Secondary School. New York: McGraw Hill, 1952.

Dyfyniad MLA

Samford, Clarence D., and Eugene Cottle. Social Studies in the Secondary School. McGraw Hill, 1952.

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