Style de citation APA (7e éd.)

Geological Survey of Papua New Guinea, Johnson, R. W., Ravian, E., & Cooke, R. J. S. (1981). Cooke-Ravian volume of volcanological papers. Geological Survey of Papua New Guinea.

Style de citation Chicago (17e éd.)

Geological Survey of Papua New Guinea, R. W. Johnson, Elias Ravian, et R. J. S. Cooke. Cooke-Ravian Volume of Volcanological Papers. Port Moresby: Geological Survey of Papua New Guinea, 1981.

Style de citation MLA (9e éd.)

Geological Survey of Papua New Guinea, et al. Cooke-Ravian Volume of Volcanological Papers. Geological Survey of Papua New Guinea, 1981.