Não informado. (2000). Bulletin of the West Virginia University Agricultural Experiment Station. West Virginia Agricultural Experiment Station.
Citação do estilo Chicago (17ª ed.)Não informado. Bulletin of the West Virginia University Agricultural Experiment Station. Morgantown, Va: West Virginia Agricultural Experiment Station, 2000.
Citação MLA (8ª ed.)Não informado. Bulletin of the West Virginia University Agricultural Experiment Station. West Virginia Agricultural Experiment Station, 2000.
Atenció: Aquestes cites poden no estar 100% correctes.