Materials may be available in more than one format (e.g., print, electronic, audio). Factors taken into consideration in deciding which format will be purchased are:

  • amount of use/demand
  • ease of use
  • storage space required/available
  • cost
  • preservation
  • risk of theft
  • illustrative and color content of original
  • availability to remote/simultaneous users
  • ease of conversion to an accessible format
  • frequency of updating