Gill, K. (1986). International research centers directory (3rd ed.). Gale Research.
芝加哥风格引文Gill, Kay. International Research Centers Directory. 3rd ed. Detroit, MI: Gale Research, 1986.
MLA引文Gill, Kay. International Research Centers Directory. 3rd ed. Gale Research, 1986.
警告：这些引文格式不一定是100％准确.