Gaya APA
Twelfth un Regional Cartographic Conference for Asia and Pacific, 20-28 Februari 1991 Vol. 1,2,3,4. (1991).
Bangkok:
[s.n].
Gaya Chicago
Twelfth un Regional Cartographic Conference for Asia and Pacific, 20-28 Februari 1991 Vol. 1,2,3,4.
.
Bangkok:
[s.n],
1991.
Text.
Gaya MLA
Twelfth un Regional Cartographic Conference for Asia and Pacific, 20-28 Februari 1991 Vol. 1,2,3,4.
.
Bangkok:
[s.n],
1991.
Text.
Gaya Turabian
Twelfth un Regional Cartographic Conference for Asia and Pacific, 20-28 Februari 1991 Vol. 1,2,3,4.
Bangkok:
[s.n],
1991.
Print.