Cita APA (7th ed.)

Australia. Bureau of Mineral Resources, Geology and Geophysics, & Papua New Guinea. Vulcanological Observatory. Final bulletin. [Vulcanological Observatory].

Cita Chicago (17th ed.)

Australia. Bureau of Mineral Resources, Geology and Geophysics, i Papua New Guinea. Vulcanological Observatory. Final Bulletin. Rabaul: [Vulcanological Observatory].

Cita MLA (8th ed.)

Australia. Bureau of Mineral Resources, Geology and Geophysics, i Papua New Guinea. Vulcanological Observatory. Final Bulletin. [Vulcanological Observatory].