Ministry of Information Republic of Indonesia, 1954
Buku Teks
Burke, W. Warner, author
Institute for Applied Behavioral Science, 1970
Buku Teks
APEC Economic Leaders Meeting, 1994
Buku Referensi
edited by Ray Wood
CCH Australia, 1978
Buku Teks
Gulley, Halbert E., author
Holt, Rinehart and Wiston, 1960
Buku Teks