Using micro cd's in a MacBook Pro
Your MacBook Pro User Guide will state the following:

Slot-loading SuperDrive
This optical drive reads and writes standard-size CDs and DVDs.


By standard-size CDs and DVDs it means that the slot-loading drive is not designed to take mini/micro optical discs of any sort.

Instead, you will need an external tray-loading optical drive or access to an older Mac with one. Of course, if it's some sort of promotional material, software, etc, then you may be able to view/download it from the internet.