Gaya APA
State Of The World 1993 : A Worldwatch Institute Report on Progress Toward a Sustainable Society. (1993).
London:
W.W.Norton Company.
Gaya Chicago
State Of The World 1993 : A Worldwatch Institute Report on Progress Toward a Sustainable Society.
Pertama.
London:
W.W.Norton Company,
1993.
Text.
Gaya MLA
State Of The World 1993 : A Worldwatch Institute Report on Progress Toward a Sustainable Society.
Pertama.
London:
W.W.Norton Company,
1993.
Text.
Gaya Turabian
State Of The World 1993 : A Worldwatch Institute Report on Progress Toward a Sustainable Society.
London:
W.W.Norton Company,
1993.
Print.