Reference	Books	Magazines	Journals	Internet	Newspapers
Advantages	Short Direct Main ideas Bibliographies	Details B/W photos	Up-to-date Short Easy to read Illustrations	Up-to-date Short Scholarly Bibliographies	Up-to-date Short Illustrations Easy to read	Up-to-date Short Easy to read
Disadvantages	Lack details	Take time to digest Mixed quality	May be superficial Mixed quality	Technical	Mixed quality	Limited to brief notices current events only
Value	Overview Identify resources	Target details Supplement	Help to understand	Current research	Overview Supplement	Current events