APA (7th ed.) Citation

Clarke, E. R. (1992). Clematis. Harper-Collins Publ.

Chicago Style (17th ed.) Citation

Clarke, Ethne Reuss. Clematis. London: Harper-Collins Publ, 1992.

MLA (9th ed.) Citation

Clarke, Ethne Reuss. Clematis. Harper-Collins Publ, 1992.

Warning: These citations may not always be 100% accurate.