R.R. Bowker Company. (1987). Books in print. .R.R. Bowker Co.
Chicagoスタイル(17版)引用形式R.R. Bowker Company. Books in Print. New Jersey: .R.R. Bowker Co, 1987.
MLA(9版)引用形式R.R. Bowker Company. Books in Print. .R.R. Bowker Co, 1987.
警告: この引用は必ずしも正確ではありません.