APA-referens (7:e uppl.)

Yu, Z., Lu, C., Hennessy, D. A., Feng, H., & Tian, H. (2020). Impacts of tillage practices on soil carbon stocks in the US corn-soybean cropping system during 1998 to 2016. IOP Publishing.

Chicago-referens (17:e uppl.)

Yu, Zhen, Chaoqun Lu, David A. Hennessy, Hongli Feng, och Hanqin Tian. Impacts of Tillage Practices on Soil Carbon Stocks in the US Corn-soybean Cropping System During 1998 to 2016. IOP Publishing, 2020.

MLA-referens (9:e uppl.)

Yu, Zhen, et al. Impacts of Tillage Practices on Soil Carbon Stocks in the US Corn-soybean Cropping System During 1998 to 2016. IOP Publishing, 2020.