APA (7th ed.) Citation

Rich, T. C. G., & Rich, M. D. B. (1988). Plant crib. Botanical Soc. of the British Isles.

Chicago Style (17th ed.) Citation

Rich, Tim C. G., and Matthew D. B. Rich. Plant Crib. London: Botanical Soc. of the British Isles, 1988.

MLA (9th ed.) Citation

Rich, Tim C. G., and Matthew D. B. Rich. Plant Crib. Botanical Soc. of the British Isles, 1988.