Calhoun, D., Naftalin, A., Nelson, B. N., Papandreou, A. G., & Sibley, M. Q. (1961). An introduction to social science. Chicago: J. B. Lippincott Company.

Calhoun, Don., Arthur Naftalin, Benjamin N. Nelson, Andreas G. Papandreou, و Mulford Q. Sibley. An Introduction to Social Science. Chicago: J. B. Lippincott Company, 1961.

Calhoun, Don., et al. An Introduction to Social Science. Chicago: J. B. Lippincott Company, 1961.