Creighton, Helen, author
W.B. Saunders Company, 1981
Buku Teks
Artikel Jurnal
Bittel, Lester Robert, author
Tata McGraw-Hill, 1974
Buku Teks
Bittel, Lester Robert, author
McGraw-Hill, 1968
Buku Teks
Mega Kharismawati, author
Fakultas Ilmu Sosial dan Ilmu Politik Universitas Indonesia, 2013
UI - Tesis (Membership)