Cita APA (7a ed.)
Liu, S. (2012). Mineral nitrogen in spring in two cropping systems with permanent nitrogen supply. SLU/Dept. of Biosystems and Technology (from 130101).
Cita Chicago Style (17a ed.)
Liu, Su. Mineral Nitrogen in Spring in Two Cropping Systems with Permanent Nitrogen Supply. SLU/Dept. of Biosystems and Technology (from 130101), 2012.
Cita MLA (9a ed.)
Liu, Su. Mineral Nitrogen in Spring in Two Cropping Systems with Permanent Nitrogen Supply. SLU/Dept. of Biosystems and Technology (from 130101), 2012.
Precaución: Estas citas no son 100% exactas.