APA (7e ed.) Bronvermelding

Bird, . E. C. F., & Ongkosongo, O. S. R. (1980). Environmental changes on the coasts of Indonesia. United Nations University.

Chicago (17e ed.) Bronvermelding

Bird, Eric C. F., en Otto S. R. Ongkosongo. Environmental Changes on the Coasts of Indonesia. Tokyo: United Nations University, 1980.

MLA (9e ed.) Bronvermelding

Bird, Eric C. F., en Otto S. R. Ongkosongo. Environmental Changes on the Coasts of Indonesia. United Nations University, 1980.