TitleHalmahera and the adjacent islands:From the Netherlands government charts to 1930; Eastern ArchipelagoContributorAllied Geographical SectionDescriptionHydrographic Branch, Sydney. Scale: 1:500,000LanguageEnglish
Allied Geographical Section South West Pacific Area Terrain Studies (1943). Monash Uni, accessed 12/03/2026, https://collections.monash.edu/nodes/view/77588