(1990). International research centers directory. Gale Research Co..
Chicagoスタイル(17版)引用形式International Research Centers Directory. Detroit, Mich.: Gale Research Co., 1990.
MLA(9版)引用形式International Research Centers Directory. Gale Research Co., 1990.
警告: この引用は必ずしも正確ではありません.