mation for Teachers. 22 May 2010 දින මුල් පිටපත (PDF) වෙතින් සංරක්ෂණය කරන ලදී. සම්ප්‍රවේශය 10 February 2010. {{cite web}}: Check date values in: |date= (help)Rosendorf, Theodore (2009). The Typographic Desk Reference (1st ed.). New Castle, Delaware. 152 pages. ISBN 978-1-58456-231-3.{{cite book}}:  CS1 maint: location missing publisher (link)Rosendorf, Theodore (2010). "The Double Space Debate". Type Desk. සම්ප්‍රවේශය 23 March 2010.Rusch, Kristine Kathryn; Smith, Dean Wesley (1990). Science Fiction Writers of America Handbook (1990 ed.). Writers Notebook Press.Russin, Robin U.; Downs, William M. (2003). Screenplay, Writing the Picture. Silman-James Press. 483 pages. ISBN 978-1-879505-70-4.Ryder, John (1979). The Case for Legibility. London: Bodley Head. ISBN 0-370-30158-7.Sabin, William (1985). The Gregg Reference Manual (6th ed.). New York: McGraw-Hill. ISBN 0-07-054399-2.Sabin, William (2005). The Gregg Reference Manual (10th Spiral-bound ed.). New York: McGraw-Hill. 688 pages