Editorial style consists of rules or guidelines that a publisher observes to ensure clear and consistent presentation of written material. Editorial style concerns uniform use of such elements as

* punctuation and abbreviations

* construction of tables

* selection of headings

* citation of references

* presentation of statistics

* as well as many other elements that are a part of every manuscript

The American Psychological Association has established a style that it uses in all of the books and journals that it publishes. Many others working in the social and behavioral sciences have adopted this style as their standard as well.

The best thing to do is buy the APA manual, fifth edition. Or you can look online at

http://apastyle.apa.org/

Try this web-site it can help:

http://owl.english.purdue.edu/owl/resource/560/01/

http://psychology.about.com/od/apastyle/APA_Format_and_Style.htm