Analysis of information sources in references of the Wikipedia article "BASE jumping" in English language version.
Quoting from: Gillespie, Angus K. "Twin Towers: the Life of New York City's World Trade Center." Rutgers University Press, 1999
{{cite web}}
: CS1 maint: numeric names: authors list (link){{cite web}}
: CS1 maint: numeric names: authors list (link)