Courtesy literature can be traced back to 13th century German and Italian writers. "Courtesy Literature", Encyclopædia Britannica Online, 2008.
doi.org
Rebhorn, Wayne (1992). "Baldesar Castiglione, Thomas Wilson, and the Courtly Body of Renaissance Rhetoric". Rhetorica. 11 (3): 241–274. doi:10.1525/rh.1993.11.3.241.
Saccone, Eduardo (1987). "The Portrait of the Courtier in Castiglione". Italica. 64 (1): 1–18. doi:10.2307/478508. JSTOR478508.
Graham, Robert J. (1990). "Composing ourselves in Style: The Aesthetics of Literacy in The Courtier". Journal of Aesthetic Education. University of Illinois Press. doi:10.2307/3332798. JSTOR3332798.
jstor.org
Saccone, Eduardo (1987). "The Portrait of the Courtier in Castiglione". Italica. 64 (1): 1–18. doi:10.2307/478508. JSTOR478508.
Graham, Robert J. (1990). "Composing ourselves in Style: The Aesthetics of Literacy in The Courtier". Journal of Aesthetic Education. University of Illinois Press. doi:10.2307/3332798. JSTOR3332798.