Gale Research Company. (1987). Research Centers directory. Gale.
Chicagoスタイル(17版)引用形式Gale Research Company. Research Centers Directory. Detroit, Mich.: Gale, 1987.
MLA(9版)引用形式Gale Research Company. Research Centers Directory. Gale, 1987.
警告: この引用は必ずしも正確ではありません.