Commas in Dates: Where Do Commas Go Between Month and Year/Day and Month?
Commas in Dates - Places - Lists - Letters - Grades 2-3-4 - 7 worksheets | Made By Teachers
AP Stylebook - Don't miss that final comma. When a phrase refers to a month, day and year, set off the year with commas. EXAMPLES: Feb. 14, 2013, was the target date.
Commas in Dates - Learn Punctuation | Grammar for 3rd Grade | Kids Academy - YouTube