Não informado. (2018). Research in Review. University of Massachusetts, Agricultural Experiment Station.
Chicago-referens (17:e uppl.)Não informado. Research in Review. Amherst, Mass: University of Massachusetts, Agricultural Experiment Station, 2018.
MLA-referens (8:e uppl.)Não informado. Research in Review. University of Massachusetts, Agricultural Experiment Station, 2018.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.