Huffman، Jane (ديسمبر 2003). "The Role of Shared Values and Vision in Creating Professional Learning Communities". National Association of Secondary School Principals. NASSP Bulletin; Reston. ج. 87 ع. 637: 21–34. DOI:10.1177/019263650308763703. S2CID:102338000.
Huffman، Jane (ديسمبر 2003). "The Role of Shared Values and Vision in Creating Professional Learning Communities". National Association of Secondary School Principals. NASSP Bulletin; Reston. ج. 87 ع. 637: 21–34. DOI:10.1177/019263650308763703. S2CID:102338000.