Citing Documents

I need help in citing a packet of documents I received from the National Archives. Could someone help me with this?  I submitted an online request for the Full Pension File of an ancestor for the time he served in the Civil War.  Both of his parents filed claims for his pension. An interesting and humorous thing to note, handwritten at the top of the Research Ticket is “Positive Gold”.  Indeed, it is. These documents are a wealth of vital information in documenting this family. I’m trying to step up my game when it comes to correctly sourcing my research.  I have been using the guild published by the St. Louis Genealogical Society, but I can’t figure out how or what information to plug into any of their templates.  The documents I received include an application from the father, which was denied because the mother was still living. At the rejection of the father’s application, the mother submitted an application. After much back and forth and an intensive interview by a special investigator years later it was accepted. There is an affidavit as to the mother’s death, followed by a second application from the father which was approved.  The documents I received were 96 pages in total. I’m guessing all this information is contained in one file, but not certain.  Thank you!