Gaya APA
Development and Change Ada: vol.3(1971-1972), vol.4(1972-1973), vol.5(1973-1974) . ( 1971 dsl).
The Hague:
Institute of Social Studies.
Gaya MLA
Development and Change Ada: vol.3(1971-1972), vol.4(1972-1973), vol.5(1973-1974) .
.
The Hague:
Institute of Social Studies,
1971 dsl.
Majalah.