Hartung, M. L. (1964). Seeing through arithmetic: Practice tablet 1. Scott.
芝加哥风格引文Hartung, Maurice Leslie. Seeing Through Arithmetic: Practice Tablet 1. Chicago: Scott, 1964.
MLA引文Hartung, Maurice Leslie. Seeing Through Arithmetic: Practice Tablet 1. Scott, 1964.
警告：这些引文格式不一定是100％准确.