APA (7e ed.) Bronvermelding

Papua New Guinea. National Statistical Office & Shadlow, J. (1982). Final figures: Census unit population, Northern Province. National Statistical Office.

Chicago (17e ed.) Bronvermelding

Papua New Guinea. National Statistical Office en John Shadlow. Final Figures: Census Unit Population, Northern Province. Port Moresby: National Statistical Office, 1982.

MLA (9e ed.) Bronvermelding

Papua New Guinea. National Statistical Office en John Shadlow. Final Figures: Census Unit Population, Northern Province. National Statistical Office, 1982.