Cita APA (7a ed.)

Norton, D. M. (1927). Elementary freehand perspective . (6a ed.). Bridgman.

Cita Chicago Style (17a ed.)

Norton, Dora Miriam. Elementary Freehand Perspective . 6a ed. Pelham-New York: Bridgman, 1927.

Cita MLA (9a ed.)

Norton, Dora Miriam. Elementary Freehand Perspective . 6a ed. Bridgman, 1927.