I did a shoot back for a university a few months ago for their Vietnamese Student Association club. I got the gig from a friend who is on the board of the org. She forwarded me the info today that her parents found her in a Vietnamese magazine, and she herself wasn't even aware that they used the picture.
The images are found on my Facebook page, and no digital copies were given to the Vietnamese student association. They just took it directly from my facebook page. Also, they have the watermark cropped, and no photo credit is given -even though it clearly says in the caption to please credit and not crop logo..
Magazine (4 bottom images are mine) - http://imgur.com/mZP1sDB
Original images can be found here:
So what seemed to happen is that there is an organization called IVHS (Illinois Vietnamese Student Union) who published the page in a Vietnamese Magazine. The friend who told me that the pictures were on the magazine said that another person on the e-board of the student org told IVHS to "pick a photo" for their story, but seemed to still have cropped the watermark.
No contract for event coverage, what happened was that I was there to take headshot pictures of the members of the club after the show, and they had asked me since I got there early to take some pictures of the event. Not sure if there was anything I could do, but any advice would be greatly appreciated.