Cita APA (7a ed.)

(1994). Economy and ecology in sustainable development. Gramedia Pustaka Utama.

Cita Chicago Style (17a ed.)

Economy and Ecology in Sustainable Development. Jakarta: Gramedia Pustaka Utama, 1994.

Cita MLA (9a ed.)

Economy and Ecology in Sustainable Development. Gramedia Pustaka Utama, 1994.