Barrow, Michael
Longman , 1997
Buku Teks SO
Bancroft, Gordon
McGraw-Hill , 1981
Buku Teks SO
Lind, Douglas A.
McGraw-Hill Education, 2019
Buku Teks SO
McClave, James T.
Prentice-Hall, 2001
Buku Teks SO
Daniel, Wayne W.
Houghton Miffiln, 1989
Buku Teks SO