Use Vox Magazine on first reference. Vox is acceptable on second reference.

Vox Magazine is an award-winning, cross-platform city publication where Missouri School of Journalism students, supervised by professionals, are the writers, editors, designers, photographers and managers. It keeps readers informed about what is happening and where to be in Columbia, Mo. Vox publishes a monthly print edition and a website, providing insight on local news and culture. The print edition has a weekly circulation of 10,000 and is distributed in the Thursday edition of the Columbia Missourian. It can also be picked up at drop locations around Columbia.

Example: The story was published in Vox Magazine.