referentie

Etymology
Presumably in each sense independently derived from, presumably from (14th century), anyway from  "to relate, refer", literally "to carry back", itself from re- "back" + ferre "to carry, bring"

Noun

 * 1) A reference, person who vouches for another, character witness
 * 2) A quoted or otherwise consulted, preferably reliably or authoritative source, as for writing an academic document