Citation Hunt

The Wikipedia snippet below is not backed by a reliable source. Can you find one?

Click I got this! to go to Wikipedia and fix the snippet, or Next! to see another one. Good luck!

In page Demography:

"
  • The crude death rate, the annual number of deaths per 1,000 people.[citation needed]
  • The infant mortality rate, the annual number of deaths of children less than 1 year old per 1,000 live births.[citation needed]
  • The expectation of life (or life expectancy), the number of years that an individual at a given age could expect to live at present mortality levels.[citation needed]