Sourcing for information to be used for research purpose may be demanding due to expertise of the research and the readers. The method used is called "TRAAP" an acronym from conjugating these five words Timeframe, Relevance, Accuracy, Author, and Purpose .
Firstly, the research material must be checked for the writer's timeframe. In order to check if the information is outdated.
Secondly, the research material must be checked for relevance: if the research topic or article is relevant to your research before you can use it for citation.
Thirdly, the research material must be checked for accuracy: if the material argument and considerations is factual and proven correct.
Consequently, the author credentials must be checked: qualification must be put into consideration.
Finally, the purpose of the author should be checked: if there's a deceptive motive behind the publication. Questions like, who is funding the publication? Is it for advertisement purpose?