DICKSON D E N. (1991). IMPROVE YOUR BUSINESS: WORKBOOK. OXFORD UNIVERSITY PRESS.
芝加哥风格引文DICKSON D E N. IMPROVE YOUR BUSINESS: WORKBOOK. MUMBAI MADRAS: OXFORD UNIVERSITY PRESS, 1991.
MLA引文DICKSON D E N. IMPROVE YOUR BUSINESS: WORKBOOK. OXFORD UNIVERSITY PRESS, 1991.
警告：这些引文格式不一定是100％准确.