Gaya APA
Economy and ecology in sustainable development. (1994).
Jakarta:
Gramedia Pustaka Utama.
Gaya Chicago
Economy and ecology in sustainable development.
text.
Jakarta:
Gramedia Pustaka Utama,
1994.
.
Gaya MLA
Economy and ecology in sustainable development.
text.
Jakarta:
Gramedia Pustaka Utama,
1994.
.
Gaya Turabian
Economy and ecology in sustainable development.
Jakarta:
Gramedia Pustaka Utama,
1994.
.