Não informado. (2012). Communicator. National Association of Elementary School Principals.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Communicator. Alexandria, Va: National Association of Elementary School Principals, 2012.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Communicator. National Association of Elementary School Principals, 2012.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.