Sawyers, Roby B. Federal tax research Roby B. Sawyers and Steven L. Gill - 11th ed. - Australia: Cengage Learning, 2018. - xix, 566p. HB Eng ISBN: 9781337282987 Subjects--Topical Terms: United StatesTaxation--Law and legislation--Legal researchLegal research Dewey Class. No.: 343.7304072 / SAF