Documentation

Documentation is important--you need to let the readers know the source of the secondary information you use. One efficient--and from my experience the most efficient--type of documentation is the Modern Language Association, otherwise known as the MLA.
What makes MLA the most efficient is its simple internal documentation: you only include information relevant to that particular bit of secondary info--you don't have to include the year the work was published, which is something that can be looked up in the bibliography any time.