APA (7th ed.) Citation

Sowerby, J. E., Johnson, C. P., & Salter, J. W. (1882). British wild flowers (Re-issue.). J. Van Voorst.

Chicago Style (17th ed.) Citation

Sowerby, John Edward, C. Pierpoint Johnson, and John William Salter. British Wild Flowers. Re-issue. London: J. Van Voorst, 1882.

MLA (9th ed.) Citation

Sowerby, John Edward, et al. British Wild Flowers. Re-issue. J. Van Voorst, 1882.