1. 2) International Committee of Medical Journal Editors. Recommendations for the conduct, reporting, editing, and publication of scholarly work in medical journals. http://www.icmje.org/icmje-recommendations.pdf.
2. 8) Academic writing course syllabus. Philadelphia : University of Pennsylvania ; 1995
3. 9) The Graduate Writing Center at Penn State University. Achieving coherence in academic writing. https://sites.psu.edu/writingandrhetoric/files/2016/09/Coherence-in-Academic-Writin-Fall-2010-27a6h32.pdf.
4. 10) University of Richmong Writing Center. Writer's web : focusing/connecting ideas. http://writing2.richmond.edu/writing/wweb/trans1.html.
5. 11) Indiana University of Pennsylvania. Using transitions. https://www.iup.edu/writingcenter/writing-resources/organization-and-structure/using-transitions/.