Chicago:
"Op. Cit.," Op. Cit. in Primitive Behavior: An Introduction to the Social Sciences, ed. Thomas, William I. (New York: McGraw-Hill Book Company, Inc., 1937), Original Sources, accessed October 27, 2026, http://www.originalsources.com/Document.aspx?DocID=P4Q1F8K5BJCYNI6.
MLA:
. "Op. Cit." Op. Cit., Vol. 35, in Primitive Behavior: An Introduction to the Social Sciences, edited by Thomas, William I., New York, McGraw-Hill Book Company, Inc., 1937, Original Sources. 27 Oct. 2026. http://www.originalsources.com/Document.aspx?DocID=P4Q1F8K5BJCYNI6.
Harvard:
, 'Op. Cit.' in Op. Cit.. cited in 1937, Primitive Behavior: An Introduction to the Social Sciences, ed. , McGraw-Hill Book Company, Inc., New York. Original Sources, retrieved 27 October 2026, from http://www.originalsources.com/Document.aspx?DocID=P4Q1F8K5BJCYNI6.