APA (7e ed.) Bronvermelding

Sanchez, P. A. (1972). Nitrogen fertilization and management in tropical rice. North Carolina Agricultural Experiment Station.

Chicago (17e ed.) Bronvermelding

Sanchez, Pedro A. Nitrogen Fertilization and Management in Tropical Rice. Raleigh: North Carolina Agricultural Experiment Station, 1972.

MLA (9e ed.) Bronvermelding

Sanchez, Pedro A. Nitrogen Fertilization and Management in Tropical Rice. North Carolina Agricultural Experiment Station, 1972.