Cita APA

Levitt, E. E. (1967). The psychology of anxiety (ed.). Bobbs-Merrill.

Citación estilo Chicago

Levitt, Eugene E. The Psychology of Anxiety. ed. Indianapolis: Bobbs-Merrill, 1967.

Cita MLA

Levitt, Eugene E. The Psychology of Anxiety. ed. Bobbs-Merrill, 1967.