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 June 30, 2025, http://www.originalsources.com/Document.aspx?DocID=VR1MGTVCW26ALFS.
MLA:
. "Op. Cit." Op. Cit., in Primitive Behavior: An Introduction to the Social Sciences, edited by Thomas, William I., New York, McGraw-Hill Book Company, Inc., 1937, Original Sources. 30 Jun. 2025. http://www.originalsources.com/Document.aspx?DocID=VR1MGTVCW26ALFS.
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 30 June 2025, from http://www.originalsources.com/Document.aspx?DocID=VR1MGTVCW26ALFS.