ebrary, Inc, & Ross, E. W. (2006). The social studies curriculum: Purposes, problems, and possibilities (3rd ed.). State University of New York Press.

ebrary, Inc, and E. Wayne Ross. The Social Studies Curriculum: Purposes, Problems, and Possibilities. 3rd ed. Albany: State University of New York Press, 2006.

ebrary, Inc, and E. Wayne Ross. The Social Studies Curriculum: Purposes, Problems, and Possibilities. 3rd ed. State University of New York Press, 2006.