Dyfyniad APA

(1985). Quality control in educational research. Metropolitan.

Dyfyniad Arddull Chicago

Quality Control in Educational Research. New Delhi: Metropolitan, 1985.

Dyfyniad MLA

Quality Control in Educational Research. Metropolitan, 1985.

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