Heald, F. (1902). Laboratory manual in elementary biology. Willard N. Clute.
芝加哥风格引文Heald, F.DF. Laboratory Manual in Elementary Biology. Binghamton, New York: Willard N. Clute, 1902.
MLA引文Heald, F.DF. Laboratory Manual in Elementary Biology. Willard N. Clute, 1902.
警告：这些引文格式不一定是100％准确.