APA-referens (7:e uppl.)

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

Chicago-referens (17:e uppl.)

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

MLA-referens (8:e uppl.)

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