Association for Supervision and Curriculum Development. (1964). Leadership through supervision. s.n.
Cita Chicago (17th ed.)Association for Supervision and Curriculum Development. Leadership Through Supervision. Washington: s.n, 1964.
Cita MLA (9th ed.)Association for Supervision and Curriculum Development. Leadership Through Supervision. s.n, 1964.
Atenció: Aquestes cites poden no estar 100% correctes.