Dearden, John, 1919-2004
Prentice-Hall, 1962
Buku Teks
Thomas, William E., author
South-Western Publishing, 1988
Buku Teks
MacDonald, John Haskell, 1896
Prentice-Hall, 1939
Buku Teks
Stedry, Andrew C.
Prentice-Hall, 1960
Buku Teks
Muhammad Rizki Triawan, author
2018
UI - Tugas Akhir