SPILKER, B. C. (2013). Mc-Graw-Hill's taxation of individuals and business entities. Mc Graw-Hill.
Lua i Stíl Chicago (17ú heag.)SPILKER, Brian C. Mc-Graw-Hill's Taxation of Individuals and Business Entities. Mc Graw-Hill, 2013.
Lua MLA (9ú heag.)SPILKER, Brian C. Mc-Graw-Hill's Taxation of Individuals and Business Entities. Mc Graw-Hill, 2013.
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