Answer:
In addition to MLA, American psychological association, Associated Press and Chicago manual of style are widely using referencing techniques,
Step-by-step explanation:
American Psychological Association(APA)
APA is the largest organization of scholars, they have their own referencing style guidelines that is used by these scholars.
Associated Press
It is also an american based agency that have their own referencing style for citation of research work named as Associated press.
Chicago Manual of Style
It is also an american referencing style used for reference.