Powell, L. S. (1969). Communication and learning. Pitman.
Chicago Style (17th ed.) CitationPowell, Leonard Sutherland. Communication and Learning. London: Pitman, 1969.
ציטוט MLAPowell, Leonard Sutherland. Communication and Learning. Pitman, 1969.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.