Penny Black (Indonesian Wikipedia)

Analysis of information sources in references of the Wikipedia article "Penny Black" in Indonesian language version.

refsWebsite

Global rank Indonesian rank

low place

low place

1web.archive.org

1^st place

1^st place

1imagesoftheworld.org

low place

low place

1davidfeldman.com

low place

low place

davidfeldman.com

Feldman, David (17 February 1999). The First Cover: May 1, 1840 (PDF). Geneva: David Feldman. hlm. 1–17. Diakses tanggal 7 December 2017.

imagesoftheworld.org

Taylor, R. A. "Wyon City Medal – 1837". Images of the World. Diarsipkan dari versi asli tanggal 19 April 2012. Diakses tanggal 30 April 2013.

norbyhus.dk

Lawrence, Ken (1 January 1996). "Before the Penny Black (First Series)". Toke Nørby. Diakses tanggal 30 April 2013.

web.archive.org

Taylor, R. A. "Wyon City Medal – 1837". Images of the World. Diarsipkan dari versi asli tanggal 19 April 2012. Diakses tanggal 30 April 2013.