Bittker, Boris I.
Warren, Gorham and Lamont, 1972
Buku Teks
Bittker, Boris I.
Warren,Gorham and Lamont, 1978
Buku Teks
Bittker, Boris I.
Federal Tax Press, 1966
Buku Teks
Bittker, Boris I.
Warren, Gorham and Lamont, 1971
Buku Teks
Gaa, Charles J.
McGraw-Hill , 1965
Buku Referensi