by Robert E. Eicholz ... [and others]
Addison-Wesley, 1991
Buku Teks
by Zalmzan Usiskin ... [and others]
Scott, Foresman, 1990
Buku Teks SO
Chew, Al H.
Houghton Mifflin, 1976
Buku Teks
Christianson, Deann
Brooks/Cole, , 1998
Buku Teks
Stark, Thomas J.
Benjamin Cumming, 1984
Buku Teks SO