THE COMPLETE .. (1988). The complete book of contemporary business letters. Round Lake Pub.
芝加哥风格引文THE COMPLETE .. The Complete Book of Contemporary Business Letters. Connecticut: Round Lake Pub, 1988.
MLA引文THE COMPLETE .. The Complete Book of Contemporary Business Letters. Round Lake Pub, 1988.
警告：这些引文格式不一定是100％准确.