The preferred format is:
Abbreviate these months when used with a specific date: January, February, August, September, October, November, December unless used in a formal invitation; (Spell out March, April, May, June and July in all references).
Correct: Sept. 10, Oct. 31, March 4
Incorrect: September 10
Spell out the month if it stands alone in running text.
When writing dates, use numerals only. Avoid the use of st, nd, rd, or th; e.g.:
Correct: The event is scheduled for Feb. 1.
Incorrect: The event is scheduled for Feb. 1st.
Spell out numbers one through nine. Use numerals for numbers 10 and above.
Use figures within a series if more than one number is more than 10.
Correct: 22 hours, 19 minutes, 6 seconds; 12 hats, 5 purses, and 16 pairs of shoes
The preferred formats for phone numbers are:
Hours of the day; e.g., 7 p.m. or 7:30 p.m.
Amounts of money with dollar sign; e.g., $3 or $3.50
Always use numerals when referring to age.
Correct: 3-year-old Annie takes ballet. or Annie, 3, takes ballet.
When using numerals with suffixes (never with dates), always place the suffix in superscript format; e.g. 1st, 2nd, 3rd, 4th, etc.