APA (7th ed.) Citation

Pearson, C. J., King, D. H., & Cunningham, G. M. (1991). A plain English guide to agricultural plants. Longman Cheshire.

Chicago Style (17th ed.) Citation

Pearson, Craig John, David H. King, and G. M. Cunningham. A Plain English Guide to Agricultural Plants. Melbourne: Longman Cheshire, 1991.

MLA (9th ed.) Citation

Pearson, Craig John, et al. A Plain English Guide to Agricultural Plants. Longman Cheshire, 1991.