APA (7th ed.) Citation

Halford, N. G., & Karp, A. (2011). Energy crops. Royal Society of Chemistry.

Chicago Style (17th ed.) Citation

Halford, N. G., and A. Karp. Energy Crops. Cambridge: Royal Society of Chemistry, 2011.

MLA (8th ed.) Citation

Halford, N. G., and A. Karp. Energy Crops. Royal Society of Chemistry, 2011.

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