Gaya APA
Local Agenda 21 Planning Guide. (1996).
Toronto:
IDRC.
Gaya Chicago
Local Agenda 21 Planning Guide.
.
Toronto:
IDRC,
1996.
Teks.
Gaya MLA
Local Agenda 21 Planning Guide.
.
Toronto:
IDRC,
1996.
Teks.
Gaya Turabian
Local Agenda 21 Planning Guide.
Toronto:
IDRC,
1996.
Teks.