APA (7th ed.) Citation

Triska, D. J., & Pursey, H. L. (1975). The hamlyn encyclopedia of plants. Hamlyn.

Chicago Style (17th ed.) Citation

Triska, Dr. J., and Helen L. Pursey. The Hamlyn Encyclopedia of Plants. London: Hamlyn, 1975.

MLA (9th ed.) Citation

Triska, Dr. J., and Helen L. Pursey. The Hamlyn Encyclopedia of Plants. Hamlyn, 1975.