Answer:

source

Answer	Crossword Clue
SOURCE	Origin
SOURCE	Root
SOURCE	Bibliography item

SOURCE	Correspondent's correspondent
SOURCE	Bibliography entry
SOURCE	Fountainhead
SOURCE	Reporter's aid
SOURCE	Lake Itasca, to the Mississippi
SOURCE	Deep Throat, to Woodward and Bernstein
SOURCE	Footnote acknowledgment
SOURCE	Bibliography acknowledgment

SOURCE	Lake Itasca, for the Mississippi
SOURCE	Font
SOURCE	Reporter's contact
SOURCE	Reporter's information supplier
SOURCE	Reporter's need
SOURCE	River's beginning
SOURCE	Documentation
SOURCE	Informant

SOURCE	Info provider
SOURCE	Originator
SOURCE	Deep Throat, for a famous example
SOURCE	Wellspring
SOURCE	What Lake Victoria is to the Nile.
SOURCE	Fountain.
SOURCE	Derivation.
SOURCE	Michener title, with "The"

SOURCE	Fount
SOURCE	Michener's "The ..."
SOURCE	Deep Throat, e.g., in the Watergate scandal
SOURCE	Deep Throat, e.g.
SOURCE	Supplier of information
SOURCE	Point of origin
SOURCE	A journalist may cite one
SOURCE	Reporter's informant

SOURCE	Genesis
SOURCE	Person who knows the story
SOURCE	Listing in a footnote
SOURCE	One given a citation