Primary sources in the Sciences report original findings and ideas. Types of publications that report the results of original scientific research include:
Research articles from scholarly journals
Conference papers and proceedings
Technical reports
Dissertations and theses
Patents
Laboratory notebooks and diaries
Letters
Field notes and plant specimens
Scientific primary research sources are most commonly accessed in scholarly journal research articles. it is important to note that not all articles written in peer reviewed scholarly journals are research articles. They also publish book review, news type articles and review articles.