Cita APA (7a ed.)

Norton, H. R. (1919). A textbook on retail selling. Ginn and Company.

Cita Chicago Style (17a ed.)

Norton, Helen Rich. A Textbook on Retail Selling. Boston : New York [etc.]: Ginn and Company, 1919.

Cita MLA (8a ed.)

Norton, Helen Rich. A Textbook on Retail Selling. Ginn and Company, 1919.