Sumption, M. R., & Engstrom, Y. (1966). School-community relations: A new approach. McGraw-Hill.
Dyfyniad Arddull ChicagoSumption, Merle Richard, and Yvonne Engstrom. School-community Relations: A New Approach. New York: McGraw-Hill, 1966.
Dyfyniad MLASumption, Merle Richard, and Yvonne Engstrom. School-community Relations: A New Approach. McGraw-Hill, 1966.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.