Beilby, M. H. (1975). Economics and operational research. ELSEVIER.
芝加哥风格引文Beilby, M. H. Economics and Operational Research. ELSEVIER, 1975.
MLA引文Beilby, M. H. Economics and Operational Research. ELSEVIER, 1975.
警告：这些引文格式不一定是100％准确.
APA引文