National Association of Elementary School Principals (U.S.) & National Education Association of the United States. Department of Elementary School Principals. The National elementary principal. National Association of Elementary School Principals.
Չիկագոյի ոճի (17րդ խմբ.) մեջբերումNational Association of Elementary School Principals (U.S.) and National Education Association of the United States. Department of Elementary School Principals. The National Elementary Principal. Arlington, Va: National Association of Elementary School Principals.
MLA (9րդ խմբ.) ՄեջբերումNational Association of Elementary School Principals (U.S.) and National Education Association of the United States. Department of Elementary School Principals. The National Elementary Principal. National Association of Elementary School Principals.