Kusko, B. H. (1992). Folder 60: Analysis of Indulgence, 1992. Saint Louis University Libraries Digitization Center.
Lua i Stíl Chicago (17ú heag.)Kusko, B. H. Folder 60: Analysis of Indulgence, 1992. Saint Louis University Libraries Digitization Center, 1992.
Lua MLA (8ú heag.)Kusko, B. H. Folder 60: Analysis of Indulgence, 1992. Saint Louis University Libraries Digitization Center, 1992.
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