Hiley, David, Western plainchant : a handbook / David Hiley. - Oxford [England] : Clarendon Press ; 1993. New York : Oxford University Press, (c)1993. - xcvii, 661 pages : illustrations ; 26 cm. LCCN: 92013020 /MN Subjects--Topical Terms: Gregorian chants--History and criticism. LC Class. No.: ML3082 / .W478 1993 ML3082