HAGEN, LYMAN B. Heart of a woman, mind of a writer, and soul of a poet : a critical analysis of the writings of Maya Angelou. Lanham, Md.: University Press of America 180 s. ISBN0761806202, ISBN9780761806202. OCLC35723733 S. 91–92.
FOERSTEL, HERBERT N. Banned in the U.S.A. : a reference guide to book censorship in schools and public libraries. Rev. and expanded 2nd ed. vyd. [Place of publication not identified]: [Information Age Publishing?] xxvii, 296 pages s. ISBN1593113749, ISBN9781593113742. OCLC71365305
