Milka Melvina, author
Fakultas Psikologi Universitas Indonesia, 2004
UI - Tesis Membership
by the Economist Intelligence Unit and the Cartographic Dept. of the Clarendon Press
Oxford University Press, 1956
Buku Referensi
Healey, Alan, author
Australian National University, 1964
Buku Teks
World Express Mapping Sdn. Bhd, [date of publication not identified]
Buku Referensi
World Express Mapping Sdn. Bhd, [date of publication not identified]
Buku Referensi