In-text citation and creating Reference List (Bibliography)

Friends, there are two parts to a reference citation. First, there is the way we cite the item in the text when we are discussing it. Second, there is the way we list the complete reference in the reference section in the end of the report.
For citing references in the text, four referencing systems are in use namely:

1. The short-title system
2. The author-date system (APA system)
3. The author-number system
4. The reference by number system

For writing references in the end or writing a bibliography, serveral well established systems are in use. In social science, some of the commonly used ones are:

1. The Harvard system
2. The American Psychological Association (APA) system
3. The American Medical Association (AMA) system
4. The McGraw-Hill system
5. The Modern Language Association (MLA) system
6. The footnote system

The link to APA system has been given beow for study:
http://library.curtin.edu.au/research_and_information_skills/referencing/apa.pdf