Lua APA (7ú heag.)

(1987). West's Federal Taxation Individual Income Taxes Edited By William H. Hoffman ... 1988 Anual Ed. West Publishing Company.

Lua i Stíl Chicago (17ú heag.)

West's Federal Taxation Individual Income Taxes Edited By William H. Hoffman ... 1988 Anual Ed. West Publishing Company, 1987.

Lua MLA (8ú heag.)

West's Federal Taxation Individual Income Taxes Edited By William H. Hoffman ... 1988 Anual Ed. West Publishing Company, 1987.

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