In my humble opinion, different styles of the referencing should be reconsidered according to the comprehensiveness of the prosed topics in different fields of research and become to be a relatively certain pattern. Of course, different international publishers have completely opposed to it and do not agree with this issue.
Different publishers may have their own requirements and therefore authors have to follow the specific guideline of the journal. Authors may choose any of the standard referencing styles if the journal do not specify any particular style of referencing.
I prefer to use APA style of referencing.
I find APA referencing method a comfortable and an appropriate one.
Based on journal requirements, the referencing style may vary. However, the following two systems are widely used.
1. Citations by names of authors, the Harvard system: references arranged alphabetically at the end.
Eg: There are widespread concerns that the post-industrial process of economic change comes with increasing labor market polarisation, driven by the changing composition of jobs (Autor et al., 2006; Goos and Manning, 2007; Goos et al., 2009).
2. Citations by numbers, the Vancouver system: numbered list of references at the end.
Eg: Peer review is a major mechanism for selecting significant and reliable scientific contributions from among the growing number of dubious submissions to scholarly journals. In addition, comments and recommendations from reviewers contribute to improving the reviewed contributions.
3. Citations in text, Harvard and Vancouver combined
Eg: journals for research and 41% for teaching, reported Tenopir and King. (Tenopir and King, 2005, P.802)
For more, https://researchbrains.com/mechanical-aspects-of-citations-and-references/