APA (7th ed.) Citation

Henty, E. E., & Pritchard, G. H. (1973). Weeds of New Guinea and their control. Division of Botany, Department of Forests.

Chicago Style (17th ed.) Citation

Henty, E. E., and G. H. Pritchard. Weeds of New Guinea and Their Control. Lae: Division of Botany, Department of Forests, 1973.

MLA (8th ed.) Citation

Henty, E. E., and G. H. Pritchard. Weeds of New Guinea and Their Control. Division of Botany, Department of Forests, 1973.