(EN) Poa annua, su The Plant List. URL consultato il 23 giugno 2016.
ucdavis.edu
ipm.ucdavis.edu
B. Ohlendorf, D. W. Cudney, Botany and Plant Sciences, UC Riverside; C. L. Elmore, Vegetable Crops/Weed Science, UC Davis; and V. A. Gibeault, Botany and Plant Sciences, UC Riverside, Annual Bluegrass Management Guidelines--UC IPM, su ipm.ucdavis.edu, University of California, aprile 2003. URL consultato l'8 settembre 2007.