Dyfyniad APA
ebrary, Inc, & Sornson, R. (2001). Preventing early learning failure. Association for Supervision & Curriculum Development.
Dyfyniad Arddull Chicago
ebrary, Inc, and Robert Sornson. Preventing Early Learning Failure. Alexandria, Va.: Association for Supervision & Curriculum Development, 2001.
Dyfyniad MLA
ebrary, Inc, and Robert Sornson. Preventing Early Learning Failure. Association for Supervision & Curriculum Development, 2001.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.