by James E. Anderson; David Brady; Charles Bullock III; Joseph stewart, JR
Brooks/Cole; cengage learning, 1984
Buku Teks
Sharkansky, Ira, author
McGraw-Hill, 1975
Buku Teks
Gerston, Larry N.
Scott Foresman and Company, 1983
Buku Teks
Peters, B. Guy, author
Sage , 2013
Buku Teks
Hird, John A., author
Wadsworth , 2004
Buku Teks