[General] how to display that one has a PhD

[RitaR]

When one has recently earned a degree, such as a PhD, how does one show this on a business card? Is the display different for addressing someone in a business letter?

For example, would a business card show:
Dr. Melody Smith, PhD or

Melody Smith, PhD ?

Thank you,
Rita

 

[Rover_KE]

'Melody Smith, PhD.'