National Conference on Educational Method, Hosic, J. F., & Brueckner, L. J. (1929). Scientific method in supervision: The second yearbook of the National Conference of Supervisors and Directors of Instruction. Bureau of Publications, Teachers College, Columbia University.
Chicago Style aipamenaNational Conference on Educational Method, James Fleming Hosic, and Leo J. Brueckner. Scientific Method in Supervision: The Second Yearbook of the National Conference of Supervisors and Directors of Instruction. New York: Bureau of Publications, Teachers College, Columbia University, 1929.
MLA aipamenaNational Conference on Educational Method, et al. Scientific Method in Supervision: The Second Yearbook of the National Conference of Supervisors and Directors of Instruction. Bureau of Publications, Teachers College, Columbia University, 1929.