A question on one of entries on Pamela Moore:

Hi there.
I am a PhD candidate at the University of Adelaide in Australia.
Pamela Moore’s Chocolates for Breakfast is one of the works that I analyze in my thesis.
There is a publicity ad for the novel from Harper’s: https://withhiddennoise.net/2010/02/ads-for-pamela-moore/
Since I cite this add in my thesis, I need to make sure if it is from Harper’s (monthly) or Harper’s Bazaar.
Could you please help me with that?
I look forward to hearing from you.
My very kind regards,
azadeh