Hohfeld, J. M. (1950). An experiment employing two method of teaching Spanish to college freshmen. [s.n.].
Chicago-referens (17:e uppl.)Hohfeld, John Maurice. An Experiment Employing Two Method of Teaching Spanish to College Freshmen. Philadelphia: [s.n.], 1950.
MLA-referens (9:e uppl.)Hohfeld, John Maurice. An Experiment Employing Two Method of Teaching Spanish to College Freshmen. [s.n.], 1950.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.