APA (7e ed.) Bronvermelding

Papua New Guinea, Geological Survey of Papua New Guinea, & George, J. E. (1978). Hydrogeological investigations 1977. Office of Minerals and Energy.

Chicago (17e ed.) Bronvermelding

Papua New Guinea, Geological Survey of Papua New Guinea, en J. E. George. Hydrogeological Investigations 1977. [Port Moresby]: Office of Minerals and Energy, 1978.

MLA (9e ed.) Bronvermelding

Papua New Guinea, et al. Hydrogeological Investigations 1977. Office of Minerals and Energy, 1978.