Nicol, Donald M. (1988). Byzantium and Venice: A Study in Diplomatic and Cultural Relations. Cambridge: Cambridge University Press. pp.197–201. ISBN0-521-34157-4.
Jenkins, Betty L. (1990). "A White Librarian in Black Harlem". The Library Quarterly: Information, Community, Policy. 60 (3): 216–231. doi:10.1086/602232. JSTOR4308477. S2CID142067742.
Jenkins, Betty L. (1990). "A White Librarian in Black Harlem". The Library Quarterly: Information, Community, Policy. 60 (3): 216–231. doi:10.1086/602232. JSTOR4308477. S2CID142067742.
Jenkins, Betty L. (1990). "A White Librarian in Black Harlem". The Library Quarterly: Information, Community, Policy. 60 (3): 216–231. doi:10.1086/602232. JSTOR4308477. S2CID142067742.