Cita APA (7th ed.)

R.R. Bowker Company. (1987). Books in print. .R.R. Bowker Co.

Cita Chicago (17th ed.)

R.R. Bowker Company. Books in Print. New Jersey: .R.R. Bowker Co, 1987.

Cita MLA (9th ed.)

R.R. Bowker Company. Books in Print. .R.R. Bowker Co, 1987.