Thomas N. Ingram...[et al.]
Harcourt College Publishers, 2001
Buku Teks
Mathur, Kamlesh
Prentice-Hall, 1994
Buku Teks
Schroeder, Roger G.
McGraw-Hill, 1993
Buku Teks
Eppen, Gary D.
Prentice Hall International, 1988
Buku Teks
Pan Books, 1969
Buku Teks