AMA (American Medical Association) referencing is derived from JAMA (Journal of the American Medical Association). Foundation of AMA referencing was built in 1962, but because of the variation in knowledge and educational institutions, AMA referencing methods changed time to time. Till now different editions have been published by AMA editorial board to help authors. Historically writers and editors who followed AMA referencing style were strictly adhere to follow the set rules and standards. To cover new concepts, in 2007 AMA published its 10th edition for citation guide, which is the most recent edition until now.
AMA referencing is well known for a breadth range of medical and health subjects. Under the umbrella of AMA referencing style, it includes medicine reports, lab research work, health-related studies, and journals. Initially, authors were using AMA referencing style for purely medical field only. As time passed, the area of research expanded so that the AMA referencing style brought modifications to its referencing manual as well. When citing AMA referencing, there are two mandatory parts to mention. According to the AMA Manual of Style 10th edition, the first part of citation requires a numerical number of references in subscript. The cited numerical number might follow the chronological order like 1, 2, 3, and so on, in the written text or paragraph. The mentioned numerical digit must indicate or direct the reader to the full reference at the end of the document.
Example of in-text referencing is stated below.
The author of the article develops the cognitive theory based on secondary data .
Above digit in parenthesis  indicate the full reference, which should be stated at the end of the document. This is mandatory to mention the study or author argument in most abbreviations when writing the literature in your own words.
1. Corell H. The Study of Cognitive Skills and Learning Handbook. Basingstoke: Palgrave Macmillan; 2013.
Generally, AMA style of reference strives for its simplicity and clarity. Because the reader of the research or written material will be aware of the number of subscripts and can easily found the reference following the number.