Cita APA (7a ed.)

Dent, E. C. (1949). The audio-visual handbook.

Cita Chicago Style (17a ed.)

Dent, Ellsworth C. The Audio-visual Handbook. [S.l.], 1949.

Cita MLA (9a ed.)

Dent, Ellsworth C. The Audio-visual Handbook. 1949.