Chicago: Noah Webster Jr., "Gainsayer," American Dictionary of the English Language, Vol. 1 in An American Dictionary of the English Language, Vol. 1 (New York: S. Converse, 1828), Original Sources, accessed June 6, 2023, http://www.originalsources.com/Document.aspx?DocID=D3PDDMT4WVDU22P.
MLA: Webster, Noah, Jr. "Gainsayer." American Dictionary of the English Language, Vol. 1, in An American Dictionary of the English Language, Vol. 1, New York, S. Converse, 1828, Original Sources. 6 Jun. 2023. http://www.originalsources.com/Document.aspx?DocID=D3PDDMT4WVDU22P.
Harvard: Webster, N, 'Gainsayer' in American Dictionary of the English Language, Vol. 1. cited in 1828, An American Dictionary of the English Language, Vol. 1, S. Converse, New York. Original Sources, retrieved 6 June 2023, from http://www.originalsources.com/Document.aspx?DocID=D3PDDMT4WVDU22P.