Chicago: Noah Webster Jr., "Quadrinomial," American Dictionary of the English Language, Vol. 2 in An American Dictionary of the English Language, Vol. 2 (New York: S. Converse, 1828), Original Sources, accessed February 7, 2023, http://www.originalsources.com/Document.aspx?DocID=8DWLMR4HIVV8QN7.
MLA: Webster, Noah, Jr. "Quadrinomial." American Dictionary of the English Language, Vol. 2, in An American Dictionary of the English Language, Vol. 2, New York, S. Converse, 1828, Original Sources. 7 Feb. 2023. http://www.originalsources.com/Document.aspx?DocID=8DWLMR4HIVV8QN7.
Harvard: Webster, N, 'Quadrinomial' in American Dictionary of the English Language, Vol. 2. cited in 1828, An American Dictionary of the English Language, Vol. 2, S. Converse, New York. Original Sources, retrieved 7 February 2023, from http://www.originalsources.com/Document.aspx?DocID=8DWLMR4HIVV8QN7.