Asrika Mayang Puti
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 2009
UI - Skripsi Open
edited by Norman Page
Macmillan, 1984
Buku Teks
Baker, Sheridan
Thomas Y. Crowell, 1966
Buku Teks
Webber, John
University of Wisconsin Press, 1968
Buku Teks
Haynes, John
Routledge, 1995
Buku Teks