Gardner, Eldon J.
1963
Buku Teks
Tamarin, Robert H.
Wm.C. Brown , 1991
Buku Teks
Stern, Curt
W. H. Freeman and Company, 1960
Buku Teks
by James J. Nora [and others]
[publisher not identified], [date of publication not identified]
Buku Teks
James J. Nora [and others]
Lea & Febiger , 1993
Buku Teks