APA-viite (7. p.)

Não informado. (2016). Agronomic-Economic Research on Soils of the Tropics. North Carolina State University, Soil Science Department.

Chicago-viite (17. p.)

Não informado. Agronomic-Economic Research on Soils of the Tropics. Raleigh, NC: North Carolina State University, Soil Science Department, 2016.

MLA-viite (8. p.)

Não informado. Agronomic-Economic Research on Soils of the Tropics. North Carolina State University, Soil Science Department, 2016.

Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.