Fisher, G. C. (2001). All about DRIPs and DSPs. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Fisher, George C. All About DRIPs and DSPs. McGraw-Hill, 2001.
Lua MLA (8ú heag.)Fisher, George C. All About DRIPs and DSPs. McGraw-Hill, 2001.
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