DRUCKER PETER F. (1980). MANAGING IN TRUBULENT TIMES. PAN BOOKS LTD.
芝加哥风格引文DRUCKER PETER F. MANAGING IN TRUBULENT TIMES. GREAT BRITAIN: PAN BOOKS LTD, 1980.
MLA引文DRUCKER PETER F. MANAGING IN TRUBULENT TIMES. PAN BOOKS LTD, 1980.
警告：这些引文格式不一定是100％准确.