Heather Harper (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Heather Harper" in English language version.

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bayreuther-festspiele.de

bbc.co.uk

books.google.com

  • Sleeman, Elizabeth (24 April 2019). The International Who's Who of Women 2002. Psychology Press. ISBN 978-1-85743-122-3 – via Google Books.

cursa-ur.com

ghostarchive.org

grammy.com

gramophone.co.uk

independent.co.uk

roh.org.uk

stanford.edu

swap.stanford.edu

  • "News". 15 March 2016. Archived from the original on 17 December 2008. Retrieved 22 April 2019 – via www.telegraph.co.uk.

telegraph.co.uk

  • "News". 15 March 2016. Archived from the original on 17 December 2008. Retrieved 22 April 2019 – via www.telegraph.co.uk.

theguardian.com