"give credit where credit is due"

I am becoming a bit hesitant about posting anymore illustrations because of all the removing citations that has been happening with my posts in the past. I originally joined tumblr to get some exposure. I work really hard on what I create and am trying to make a living off of it. please respect everything i post as my intellectual property and give credit where credit is due. i am unable to move forward in my career as an illustrator when you share without citing sources. I love sharing my work, but i will have no more work to share if people keep erasing citations. please cite if you repost. you may be reposting someones livelyhood.  thank you