Cita APA (7a ed.)

Douglas, L. (1944). Leonardo de Vinci: His life and his pictures (1º ed.). University of Chicag.

Cita Chicago Style (17a ed.)

Douglas, Langton. Leonardo De Vinci: His Life and His Pictures. 1º ed. Chicago: University of Chicag, 1944.

Cita MLA (9a ed.)

Douglas, Langton. Leonardo De Vinci: His Life and His Pictures. 1º ed. University of Chicag, 1944.