Why references are important
How to add them
Citations the easy way
Which sources are good enough?
Review of what you've learned
All of the statements below happen to be true, but only some are adequately supported by a reliable source. Can you guess which ones?
Less than 3 percent of the geotagged articles on Wikipedia are for places in Africa, despite the continent having 14 percent of the world's population.
The Center for Urban Forest Research estimates that shade from the 26,000 trees in Claremont, California, saves the city more than 2.1 million kilowatt-hours of electricity per year in reduced air conditioning costs, equivalent to more than $468,000 in savings.
In May 2019, Leo Burnett Tailor Made, a marketing agency for The North Face Brazil, revealed that they had surreptitiously replaced photos of popular outdoor destinations on Wikipedia with photos featuring North Face products in an attempt to get those products to appear more prominently in search engine results.