Frank, Patricia
Wiley, 2011
eBooks
Levine, Robert I.
McGraw-Hill, 1986
Buku Teks
Hannah, Larry S.
Addison-Wesley, 1977
Buku Teks
edited by Francis M. Hult and David Cassels Johnson
Wiley Blackwell, 2015
Buku Teks
contributing editors Elizabeth Wilhide and Deborah Smith-Morant ; consultant editor Rick Mather
Contran Octopus, 1995
Buku Referensi