Dyfyniad APA

Callison, W. L., & McAllister, C. H. (1999). Elementary school principal's handbook. Technomic.

Dyfyniad Arddull Chicago

Callison, William L., and Carol H. McAllister. Elementary School Principal's Handbook. Lancaster, PA: Technomic, 1999.

Dyfyniad MLA

Callison, William L., and Carol H. McAllister. Elementary School Principal's Handbook. Technomic, 1999.

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