Cunningham, Lawrence S., author
Harcourt Brace College Publisher, 1994
Buku Teks
Cunningham, Lawrence S., author
Cengage Learning, 2018
Buku Teks
Cunningham, Lawrence, author
Cengage Learning, 2018
Buku Teks
Cunningham, Lawrence, author
Thomson/Wadsworth, 2014
Buku Teks
Utah , Salt Lake City : University of Utah Printing Service
Majalah, Jurnal, Buletin