Fraenkel, J. R. (1973). Helping students think and value: Strategies for teaching the social studies. Prentice-Hall.
芝加哥风格引文Fraenkel, Jack R. Helping Students Think and Value: Strategies for Teaching the Social Studies. Englewood Cliffs, N.J., Manila: Prentice-Hall, 1973.
MLA引文Fraenkel, Jack R. Helping Students Think and Value: Strategies for Teaching the Social Studies. Prentice-Hall, 1973.
警告：这些引文格式不一定是100％准确.