Phares Odaffer, Randall Charles, Thomas Cooney, John Dossey, Jane Schielack
Pearson Addison Wesley, 2008
Buku Teks SO
Garstens, Helen L.
Macmillan, 1969
Buku Teks SO
Gomberg, Karen Cornell
McFarland, 1990
Buku Teks SO
Billstein, Rick
Pearson Addison Wesley, 2007
Buku Teks SO
edited by Kate Myers; with Graham Clayton, David James and Jim O`Brien
RoutledgeFalmer, 2005
Buku Teks SO