Artikel Jurnal
Cunningham, Lawrence, author
Thomson/Wadsworth, 2014
Buku Teks
Cunningham, Lawrence, author
Cengage Learning, 2018
Buku Teks
Cunningham, Lawrence S., author
Cengage Learning, 2018
Buku Teks
Rosinger, Lawrence K., author
Alfred A. Knopf, 1953
Buku Teks