A main supply is the first supply of an item of information.

Main vs additional sources

it gives first-hand testimony of a thought, shows initial information, or papers an event that is historical. For example a study in a log, an image, documentary footage, or a job interview.

A additional supply relays information, providing interpretation and analysis of various other cited source. It is centered on main sources. For example publications & articles that discuss information collected off their sources. Encyclopedias autumn in this category, since they just contain brief overviews of a topic that are often further removed from primary sources than the typical book or article though you may hear some people refer to these as tertiary sources.

Here is another method to contemplate it: considercarefully what types of information you are ‘mining’ from the supply. Then ask: Is it the very first spot that idea or reality seems, or achieved it begin some other place?

Instance: you are reading a written guide regarding the movie resident Kane. You quote a sentence concerning the administration abilities of Orson Welles (the manager). These details features a citation close to it – as it happens, this reality arises from interviews of this cast and crew that has been posted in a mag through the 40’s. The guide you are reading simply summarizes & cites those interviews – it really is an additional supply for that reality. The main supply would end up being the original meeting as posted when you look at the mag.

In identical guide on Citizen Kane, mcdougal provides his or her own theories about spiritual allegories in the movie. You dec main supply as this could be the initial supply that people theories can be found in – it really is your insight that is best into just just how this writer thinks! Continue reading A main supply is the first supply of an item of information.