Hello, you need to provide which book/magazine and pages these scans are taken from on their file pages. Go to each of their file pages now and click "Add a description" on the About tab underneath the image. Please read Project:Image Policy and remember to use Special:Upload to upload images in the future.
If you want to reference them, don't add a gallery section in the References section. Instead, next to a paragraph or sentence use <ref></ref> tags. e.g. if one makes a comparison between the RX-78-01[N] head to the RX-78-02 head, one can put <ref>[[File:Gundam_Local_Type_02.jpg|name of book with page number]]</ref>.