Παραπομπή σε μορφή APA (7η εκδ.)

Hohfeld, J. M. (1950). An experiment employing two method of teaching Spanish to college freshmen. [s.n.].

Παραπομπή σε μορφή Chicago (17η εκδ.)

Hohfeld, John Maurice. An Experiment Employing Two Method of Teaching Spanish to College Freshmen. Philadelphia: [s.n.], 1950.

Παραπομπή σε μορφή MLA (9th εκδ.)

Hohfeld, John Maurice. An Experiment Employing Two Method of Teaching Spanish to College Freshmen. [s.n.], 1950.