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