APA (7th ed.) Citation

Arber, A. R., & Stearn, W. T. (1990). Herbals their origin and evolution (3rd ed.). U. P.

Chicago Style (17th ed.) Citation

Arber, Agnes Robertson, and William T. Stearn. Herbals Their Origin and Evolution. 3rd ed. Cambridge: U. P, 1990.

MLA (9th ed.) Citation

Arber, Agnes Robertson, and William T. Stearn. Herbals Their Origin and Evolution. 3rd ed. U. P, 1990.

Warning: These citations may not always be 100% accurate.