P. F. Collier & Son Corporation, 1917
Buku Referensi
Elita Nuraeny, author
Fakultas Teknik Universitas Indonesia, 2012
UI - Skripsi Open
Wood, James, author
Farrar, Straus and Giroux, 2008
Buku Teks
Harcourt, Brace & World, Inc., 1968
Buku Teks
Merton, Stephen
Twayne Publishing, 1967
Buku Teks