APA (7th ed.) Citation

Henty, E. E., & Pritchard, G. H. (1975). Weeds of New Guinea & their control (2nd ed.). Dept. of Forests, Division of Botany.

Chicago Style (17th ed.) Citation

Henty, E. E., and G. H. Pritchard. Weeds of New Guinea & Their Control. 2nd ed. Lae: Dept. of Forests, Division of Botany, 1975.

MLA (9th ed.) Citation

Henty, E. E., and G. H. Pritchard. Weeds of New Guinea & Their Control. 2nd ed. Dept. of Forests, Division of Botany, 1975.