Garfunkel, F. (1967). Observation of teachers and teaching: Strategies and applications. Office of Education.
Citazione stile Chigago Style (17a edizione)Garfunkel, Frank. Observation of Teachers and Teaching: Strategies and Applications. Washington: Office of Education, 1967.
Citatione MLA (9a ed.)Garfunkel, Frank. Observation of Teachers and Teaching: Strategies and Applications. Office of Education, 1967.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.