APA-Zitierstil (7. Ausg.)

Barker, A. V. (1980). Efficient use of nitrogen on crop land in the northeast. Conn. Agricultural Experiment Station.

Chicago-Zitierstil (17. Ausg.)

Barker, Allen V. Efficient Use of Nitrogen on Crop Land in the Northeast. New Haven, Conn: Conn. Agricultural Experiment Station, 1980.

MLA-Zitierstil (9. Ausg.)

Barker, Allen V. Efficient Use of Nitrogen on Crop Land in the Northeast. Conn. Agricultural Experiment Station, 1980.