APA (7e ed.) Bronvermelding

Não informado. Tropical Soils Research Program, Annual Report. North Carolina State University, Soil Science Department.

Chicago (17e ed.) Bronvermelding

Não informado. Tropical Soils Research Program, Annual Report. Raleigh, NC: North Carolina State University, Soil Science Department.

MLA (8e ed.) Bronvermelding

Não informado. Tropical Soils Research Program, Annual Report. North Carolina State University, Soil Science Department.

Let op: Deze citaties zijn niet altijd 100% accuraat.