Can I serve notice of termination to roommate?

[beauchat]

I'm planning to end my roommate's tenancy at the end of August (she's month-to-month). I know she can be served personally, but can I do it, (like, hand her the termination notice directly) or do I have to get someone else to do it?

Also, can I serve her NOW, even though I've verbally given her until Sept. 30th? I'd rather get all the necessary paperwork out of the way as soon as possible.

[consigliere]

Real Property Law §232-a provides (emphasis added):
 
Notice to terminate monthly tenancy or tenancy from month to month in the city of New York
 
No monthly tenant, or tenant from month to month, shall hereafter be removed from any lands or buildings in the city of New York on the grounds of holding over his term unless at least thirty days before the expiration of the term the landlord or his agent serve upon the tenant, in the same manner in which a notice of petition in summary proceedings is now allowed to be served by law, a notice in writing to the effect that the landlord elects to terminate the tenancy and that unless the tenant removes from such premises on the day on which his term expires the landlord will commence summary proceedings under the statute to remove such tenant therefrom.
 

[beauchat]

In New York City, you must serve the tenant (roommate) a "Thirty Days Notice Terminating Monthly Tenancy or Tenancy from Month to Month." It's a Blumberg legal form. My question: can I, myself, serve my roommate this form, or must I use an outside person, like a process server. I've heard that I must use a process server, but is this true?