HOFFMAN, W. H. (1988). West's federal taxation: Individual income taxes (1988annual edition). West Publishing.
Lua i Stíl Chicago (17ú heag.)HOFFMAN, William H. West's Federal Taxation: Individual Income Taxes (1988annual Edition). St. Paul: West Publishing, 1988.
Lua MLA (9ú heag.)HOFFMAN, William H. West's Federal Taxation: Individual Income Taxes (1988annual Edition). West Publishing, 1988.
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