Crowder, Richard
Twayne Publisher, 1964
Buku Teks
Sandburg, Carl, author
Harcourt Brace Company, 1922
Buku Teks
Listi Herlistiani, author
1990
UI - Skripsi Membership
Golden, Harry, author
World Pub., 1961
Buku Teks SO
Adityo Anggoro, author
Fakultas Ilmu Pengetahuan Budaya Universitas Indonesia, 2012
UI - Skripsi Open