Editing Gradual (section)

==Footnotes==
# {{note|ref01}} {{1911|wstitle=Gradual|volume=12|page=311|inline=1}}
# {{note|ref02}} Apel, Willi, ed (1972). ''Harvard Dictionary of Music'', 2nd edition. Cambridge, Harvard University Press. Page 350.
# {{note|ref03}} {{cite book
 | last = Abbaye Saint-Pierre de Solesmes
 | year = 1979
 | title = Graduale Triplex
 | publisher = Desclée & Socii
 | location = Tournai, Belgium
 | isbn = 2-85274-094-X
}}
# {{note|ref04}} {{cite book
 | last = Apel
 | first = Willi
 | year = 1990
 | title = Gregorian Chant
 | publisher = Indiana University Press
 | location = Bloomington, IN
 | isbn = 0-253-20601-4
}}
# {{note|ref05}} {{cite book
 | last = Hoppin
 | first = Richard
 | year = 1978
 | title = Medieval Music
 | publisher = W. W. Norton & Company
 | location = New York
 | isbn = 0-393-09090-6
 | url-access = registration
 | url = https://archive.org/details/medievalmusic00hopp
 }}
# {{note|ref06}} {{cite book
 | last = Hiley
 | first = David
 | year = 1995
 | title = Western Plainchant: A Handbook
 | publisher = Oxford University Press Inc.
 | location = New York
 | isbn = 0-19-816572-2
}}
# {{note|ref07}} Apel, Willi, ed (1972). ''Harvard Dictionary of Music'', 2nd edition. Cambridge, Harvard University Press. Page 350.