Maulinda Rahmi Maryam
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 2008
UI - Skripsi Open
Linda Sunarti
2001
UI - Tesis Membership
Ryan, N J
Oxford Univ. Press, 1967
Buku Teks
Gullick, J M
Ernest Benn, 1969
Buku Teks
Parkinson, Cyril Northcote, 1909-1993
University of Malaya Press, 1964
Buku Teks