Chicago: Noah Webster Jr., "Indefeasible," 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 October 1, 2023, http://www.originalsources.com/Document.aspx?DocID=DMU6HAPK46MREP7.
MLA: Webster, Noah, Jr. "Indefeasible." 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. 1 Oct. 2023. http://www.originalsources.com/Document.aspx?DocID=DMU6HAPK46MREP7.
Harvard: Webster, N, 'Indefeasible' 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 1 October 2023, from http://www.originalsources.com/Document.aspx?DocID=DMU6HAPK46MREP7.