Não informado. (1987). Norwegian Journal of Agricultural Sciences. Norwegian Agricultural Advisory Centre.
Cita Chicago Style (17a ed.)Não informado. Norwegian Journal of Agricultural Sciences. As, Noruega: Norwegian Agricultural Advisory Centre, 1987.
Cita MLA (8a ed.)Não informado. Norwegian Journal of Agricultural Sciences. Norwegian Agricultural Advisory Centre, 1987.
Precaución: Estas citas no son 100% exactas.