If you have created the image yourself, then no reference is required. However, you will still need a caption for the figure or table. from http://datasearch.uts.edu.au/teachlearn/avoidingplagiarism/tutorial/nonverbal.cfm真似をしても，自分…

Preferences - Compositionのgsをgs-X11に変更自分の環境に寄るのだろうが，これで解決．http://macosx-tex.576846.n2.nabble.com/No-output-with-LaTeXit-and-Mac-Tex-2008-td1099518.html