Some useful advice for finding data for your project:
Contains over 1,000 books, reference works and journal articles by academics from across the social sciences. Also, includes over 500 specially authored cases that illustrate how real academic research projects were conducted and a collection of teaching datasets and instructional guides for students to develop data analysis skills.
Just like any other sources you use in your research, you should cite the source of your data.
Citing data has many benefits:
Watch this short video from ICSPR for more information.
NIH Research Day September 25, 1986 Poster (Source: National Institutes of Health/ArtStor)