Dyfyniad APA

Callahan, J. F. (1977). Teaching in the elementary school: Planning for competence. New York: MacMillan.

Dyfyniad Arddull Chicago

Callahan, Joseph F. Teaching in the Elementary School: Planning for Competence. New York: MacMillan, 1977.

Dyfyniad MLA

Callahan, Joseph F. Teaching in the Elementary School: Planning for Competence. New York: MacMillan, 1977.

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