April, E. W. (1982). PreTest for physicians preparing for the visa qualifying examination. McGraw-Hill.
芝加哥风格引文April, Ernest W. PreTest for Physicians Preparing for the Visa Qualifying Examination. New York: McGraw-Hill, 1982.
MLA引文April, Ernest W. PreTest for Physicians Preparing for the Visa Qualifying Examination. McGraw-Hill, 1982.
警告:这些引文格式不一定是100%准确.