oleh M. Fuad ... [and others]
Gramedia Pustaka Utama, 2000
Buku Teks
McNaughton, Wayne L. (Wayne Leslie), 1902-
Wiley, 1970
Buku Teks
Madura, Jeff
South-Western College, 2001
Buku Teks
Straub, Joseph T.
Kent, 1985
Buku Teks
Monsen, R. Joseph
Houghton Mifflin, 1967
Buku Teks