Alejandro, R. (1951). Principles of teaching and supervision: A handbook for young teachers. Philippine Book Co.
Citazione stile Chigago Style (17a edizione)Alejandro, Rufino. Principles of Teaching and Supervision: A Handbook for Young Teachers. Manila: Philippine Book Co, 1951.
Citatione MLA (9a ed.)Alejandro, Rufino. Principles of Teaching and Supervision: A Handbook for Young Teachers. Philippine Book Co, 1951.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.