Cita APA (7a ed.)
Alvum-Toll, K., Karlsson, T., & Ström, H. (2011). Biochar as soil amendment.
Cita Chicago Style (17a ed.)
Alvum-Toll, Kajsa, Tellie Karlsson, y Helena Ström. Biochar as Soil Amendment. 2011.
Cita MLA (9a ed.)
Alvum-Toll, Kajsa, et al. Biochar as Soil Amendment. 2011.
Precaución: Estas citas no son 100% exactas.