How to cite information sources that I used when creating my own table or graph?
It always depends on the instructions for writing theses at the respective department. In general,the procedure is as follows: write “Source” under the links/shortened citations of used sources (according to the citation method). References at the end of the work will contain full citation of the sources. In case you processed a table yourself, it is advisable to mark that it is your work. If it is your work as a whole, e.g. a photograph, graph based on a questionnaire survey and so on, it is advisable to write: Source: author.