POLIS, A. R., & BEARD, E. M. (1973). Fundamental mathematics for elementary teachers: A behavioral objectives approach. Harper and Row.
芝加哥风格引文POLIS, A. Richard, 与 Earl M. BEARD. Fundamental Mathematics for Elementary Teachers: A Behavioral Objectives Approach. New York: Harper and Row, 1973.
MLA引文POLIS, A. Richard, 与 Earl M. BEARD. Fundamental Mathematics for Elementary Teachers: A Behavioral Objectives Approach. Harper and Row, 1973.
警告：这些引文格式不一定是100％准确.