Sunal, C. S., & Haas, M. E. (2005). Social studies for the elementary and middle grades: A constructivist approach (2nd ed.). Pearson/Allyn & Bacon.
芝加哥风格引文Sunal, Cynthia S., 与 Mary E. Haas. Social Studies for the Elementary and Middle Grades: A Constructivist Approach. 2nd ed. Boston: Pearson/Allyn & Bacon, 2005.
MLA引文Sunal, Cynthia S., 与 Mary E. Haas. Social Studies for the Elementary and Middle Grades: A Constructivist Approach. 2nd ed. Pearson/Allyn & Bacon, 2005.
警告：这些引文格式不一定是100％准确.