Oliver Campbell (Danish Wikipedia)

Analysis of information sources in references of the Wikipedia article "Oliver Campbell" in Danish language version.

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archive.org

Collins, Bud (2010). The Bud Collins History of Tennis (2 udgave). [New York]: New Chapter Press. s. 488. ISBN 978-0942257700.
Collins, Bud (2010). The Bud Collins History of Tennis (2 udgave). [New York]: New Chapter Press. s. 455. ISBN 978-0942257700.

nytimes.com

query.nytimes.com

"In The Tennis Court" (PDF). The New York Times. 27. august 1891. Hentet 2. juni 2012.
"Campbell and Huntington" (PDF). The New York Times. 25. august 1892. Hentet 3. juni 2012.