APA (7th ed.) Citation

Barr, R. D., Barth, J. L., & Shermis, S. S. (1977). Defining the social studies. National Council for the Social Studies.

Chicago Style (17th ed.) Citation

Barr, Robert D., James L. Barth, and S. Samuel Shermis. Defining the Social Studies. Arlington, Virginia: National Council for the Social Studies, 1977.

MLA (8th ed.) Citation

Barr, Robert D., et al. Defining the Social Studies. National Council for the Social Studies, 1977.