(1994). Economy and ecology in sustainable development. Gramedia Pustaka Utama.
Chicago-čujuhus (17. p.)Economy and Ecology in Sustainable Development. Jakarta: Gramedia Pustaka Utama, 1994.
MLA-čujuhus (9. p.)Economy and Ecology in Sustainable Development. Gramedia Pustaka Utama, 1994.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.