Michael Brennan. Tropical Storm Grace Discussion Four. National Hurricane Center (报告) (National Oceanic and Atmospheric Administration). 2009-10-05 [2016-04-19]. (原始内容存档于2016-03-04).
Daniel Brown. Tropical Storm Grace Discussion Five (Final). National Hurricane Center (报告) (National Oceanic and Atmospheric Administration). 2009-10-06 [2016-04-19]. (原始内容存档于2016-03-04).
aoml.noaa.gov
Hurricane Specialists Unit. Easy to Read HURDAT 1851–2009. National Hurricane Center. 2009 [2016-04-19]. (原始内容存档于2016-03-05).
Michael Brennan. Tropical Storm Grace Discussion Four. National Hurricane Center (报告) (National Oceanic and Atmospheric Administration). 2009-10-05 [2016-04-19]. (原始内容存档于2016-03-04).
Daniel Brown. Tropical Storm Grace Discussion Five (Final). National Hurricane Center (报告) (National Oceanic and Atmospheric Administration). 2009-10-06 [2016-04-19]. (原始内容存档于2016-03-04).