Cita APA (7th ed.)

R.R. Bowker Company. (1957). Books in print. R.R. Bowker Co.

Cita Chicago (17th ed.)

R.R. Bowker Company. Books in Print. New York: R.R. Bowker Co, 1957.

Cita MLA (9th ed.)

R.R. Bowker Company. Books in Print. R.R. Bowker Co, 1957.