Chicago: Jane Austen, "Advertisement by the Authoress," Northanger Abbey Original Sources, accessed February 18, 2025, http://originalsources.com/Document.aspx?DocID=4KWX2XCT59YYH41.
MLA: Austen, Jane. "Advertisement by the Authoress." Northanger Abbey, Original Sources. 18 Feb. 2025. http://originalsources.com/Document.aspx?DocID=4KWX2XCT59YYH41.
Harvard: Austen, J, 'Advertisement by the Authoress' in Northanger Abbey. Original Sources, retrieved 18 February 2025, from http://originalsources.com/Document.aspx?DocID=4KWX2XCT59YYH41.