Schaefer, R. J. (1967). The school as a center of inquiry. Harper & Row.
Citazione stile Chigago Style (17a edizione)Schaefer, Robert Joseph. The School as a Center of Inquiry. New York: Harper & Row, 1967.
Citatione MLA (9a ed.)Schaefer, Robert Joseph. The School as a Center of Inquiry. Harper & Row, 1967.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.