Sgroi, R. J., & Sgroi, L. S. (1993). Mathematics for elementary school teachers: Problem-solving investigations. PWS-Kent.
芝加哥风格引文Sgroi, Richard J., 与 Laura S. Sgroi. Mathematics for Elementary School Teachers: Problem-solving Investigations. Boston: PWS-Kent, 1993.
MLA引文Sgroi, Richard J., 与 Laura S. Sgroi. Mathematics for Elementary School Teachers: Problem-solving Investigations. PWS-Kent, 1993.
警告：这些引文格式不一定是100％准确.