Test

According to scientists, the Sun is pretty big.<ref name="miller" /> The Moon, however, is not so big.<ref name="smith" />

Notes

<references> <ref name="miller">E. Miller, The Sun, (New York: Academic Press, 2005), 23–25.</ref> <ref name="smith">R. Smith, "Size of the Moon", Scientific American, 46 (April 1978): 44–46.</ref> </references>