Nobbs, J. (1973). Advanced level economics. McGraw-Hill.
芝加哥风格引文Nobbs, Jack. Advanced Level Economics. London: McGraw-Hill, 1973.
MLA引文Nobbs, Jack. Advanced Level Economics. McGraw-Hill, 1973.
警告：这些引文格式不一定是100％准确.
APA引文
Nobbs, J. (1973). Advanced level economics. McGraw-Hill.
芝加哥风格引文Nobbs, Jack. Advanced Level Economics. London: McGraw-Hill, 1973.
MLA引文Nobbs, Jack. Advanced Level Economics. McGraw-Hill, 1973.