1.6 - California Local Sales Taxes. California does not allow local jurisdictions like cities or counties to collect a local sales tax. The California state sales tax of 7.5% is applicable statewide. You can view the sales tax rates for various cities in California here.
When the barcoding system was set up for serials, it was realised that the ISSN as a unique identifying number for the title could be used as part of the barcode to identify the serial. The ISSN is therefore the title identifier in the barcode. Magazine barcodes are represented in EAN format with a 2 digit add-on code.
APA Online Sources. Digital Object Identifiers (DOI) A Digital Object Identifier (DOI) is a unique number assigned to some journal articles and books available electronically. Magazine and newspaper articles are not assigned DOIs. APA requires citations for journals and books to include a DOI, if it is available. Find the DOI on the article or look up the DOI with the author name and article title at: http://www.crossref.org/guestquery/. Research Database Sources.