Chicago: Through the Dark Continent in Primitive Behavior: An Introduction to the Social Sciences, ed. Thomas, William I. (New York: McGraw-Hill Book Company, Inc., 1937), Original Sources, accessed April 4, 2025, http://originalsources.com/Document.aspx?DocID=YP9343JZ159HQ5K.
MLA: . Through the Dark Continent, Vol. 2, in Primitive Behavior: An Introduction to the Social Sciences, edited by Thomas, William I., New York, McGraw-Hill Book Company, Inc., 1937, Original Sources. 4 Apr. 2025. http://originalsources.com/Document.aspx?DocID=YP9343JZ159HQ5K.
Harvard: , Through the Dark Continent. cited in 1937, Primitive Behavior: An Introduction to the Social Sciences, ed. , McGraw-Hill Book Company, Inc., New York. Original Sources, retrieved 4 April 2025, from http://originalsources.com/Document.aspx?DocID=YP9343JZ159HQ5K.