I've also recommended John Lott's book, "More Guns Less Crime" and Paxton Quigley's "Armed and Female" which is a little outdated, but makes some great points.
Unfortunately, the gun-grabbers tend to "yell the loudest" along with skewing their arguments with bogus "facts" and statistics. They get invited on "Rosie" (gag) and "Oprah" and passionately spew their lies while their sympathetic hostesses nod and go "Uh-Huh."
It's frustrating. But, I feel that if I've convinced just one woman of the RIGHT and the REASON of arming and protecting herself, I've done my job.
"When citizens fear their government, you have tyranny; when the government fears its citizens, you have freedom." - Thomas Jefferson -