Petra (swan) (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Petra (swan)" in English language version.

refsWebsite

Global rank English rank

66^th place

350^th place

418^th place

2,215^th place

orf.at

(in German) ORF « In Tretboot verliebt: Schwan „Petra“ wieder aufgetaucht », April 7, 2013 (retrieved October 18, 2013).

spiegel.de

« Nationwide Swanhunt - Fans Alarmed as World-Famous Petra Disappears », Spiegel Online International, January 27, 2009, retrieved July 1, 2010.