HOFFMAN PAUL E. (1996). INTERNET INSTANT REFERENCE (3RD.). BPB PUBLICATIONS.
Lua i Stíl Chicago (17ú heag.)HOFFMAN PAUL E. INTERNET INSTANT REFERENCE. 3RD. NEW DELHI: BPB PUBLICATIONS, 1996.
Lua MLA (9ú heag.)HOFFMAN PAUL E. INTERNET INSTANT REFERENCE. 3RD. BPB PUBLICATIONS, 1996.
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