greinarinnar var „History of writing“ á ensku útgáfu Wikipedia. Sótt 19. febrúar 2006. Fyrirmynd greinarinnar var „Writingsystem“ á ensku útgáfu Wikipedia
Schulz-Forberg, Hagen (2005). Unravelling Civilisation: European Travel and Travel Writing. Peter Lang. bls. 162. ISBN 9052012350. Storozynski, Alex (2009). The Peasant
storylines from the manga, the series creators had to complete the season by writing their own stories. http://www.animeondvd.com/conitem.php?item=226 Geymt