HUBBARD RON L. (2001). TOOL FOR THE WORK PLACE. NEW ERA PUB. CO. LTD.
芝加哥风格引文HUBBARD RON L. TOOL FOR THE WORK PLACE. NEW ERA PUB. CO. LTD, 2001.
MLA引文HUBBARD RON L. TOOL FOR THE WORK PLACE. NEW ERA PUB. CO. LTD, 2001.
警告：这些引文格式不一定是100％准确.
APA引文