You can start with project management general: http://www.nutcache.com/blog/how-to-identify-critical-success-factors-in-project-management/

Then, you can do a literature review relevant for the industry.

Asking peers and other experts is a good idea.

Thank you, but the research will me more credible if I use validated questionnaire followed by structured and unstructured interviews. Right?

Article Critical success factors for projects in the petroleum industry

http://www.academicjournals.org/article/article1380724296_Denni-Fiberesima%20and%20Rani.pdf

Article Project Management: Factors Critical for Success of Projects...