Something proof that something is true is evidence :).
Its period hope this helped you
Most of the articles or papers need to have a documentation support.
The context of disciplines can be diverse for example in engineering field if you need to develop an essay is necessary to investigate in the scientific community who is writing about the topic (state of art).
The APA standards does suggest to use the forms of documentation as:
In- text citation and work-cited list.
Example of in- text citation: The saw welding process is usually used in USA ( espinoza, 2018).
Example of work-cited list.
Bibliography.
1. James and dawson, inspection of pressure vessel to ASME Section VIII Div 1, presented at taking Pressure Vessel from Cradle to grave, Singapura, 2011.