APA (7th ed.) Citation

Humphreys, G. S. (1984). The environment and soils of Chimbu Province, Papua New Guinea, with particular reference to soil erosion. Dept. of Primary Industry.

Chicago Style (17th ed.) Citation

Humphreys, G. S. The Environment and Soils of Chimbu Province, Papua New Guinea, with Particular Reference to Soil Erosion. Port Moresby: Dept. of Primary Industry, 1984.

MLA (9th ed.) Citation

Humphreys, G. S. The Environment and Soils of Chimbu Province, Papua New Guinea, with Particular Reference to Soil Erosion. Dept. of Primary Industry, 1984.