Gray, W. S. (1930). The training of college teachers, including their preliminary preparation and in-service improvement. The University of Chicago press.
Citazione stile Chigago Style (17a edizione)Gray, William Scott. The Training of College Teachers, Including Their Preliminary Preparation and In-service Improvement. Chicago, Ill: The University of Chicago press, 1930.
Citatione MLA (9a ed.)Gray, William Scott. The Training of College Teachers, Including Their Preliminary Preparation and In-service Improvement. The University of Chicago press, 1930.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.