APA (7th ed.) Citation

Duffus, C. M., & Duffus, J. H. (1984). Carbohydrate metabolism in plants. Longman.

Chicago Style (17th ed.) Citation

Duffus, C. M., and John H. Duffus. Carbohydrate Metabolism in Plants. London ; New York: Longman, 1984.

MLA (9th ed.) Citation

Duffus, C. M., and John H. Duffus. Carbohydrate Metabolism in Plants. Longman, 1984.