APA (7th ed.) Citation

Rooke, E. (1989). Groundwater resource survey of Bali (Unea) Island, West New Britain Province. Geological Survey of Papua New Guinea.

Chicago Style (17th ed.) Citation

Rooke, E.R. Groundwater Resource Survey of Bali (Unea) Island, West New Britain Province. [Port Moresby]: Geological Survey of Papua New Guinea, 1989.

MLA (9th ed.) Citation

Rooke, E.R. Groundwater Resource Survey of Bali (Unea) Island, West New Britain Province. Geological Survey of Papua New Guinea, 1989.