Bibliography Aston (1989) Peter. "Review" August Music & Letters No. 3, Vol. 70 Hugues (1974) Rosemary. London. Haydn. J. M. Dent & Sons Ltd McCaldin (1989) Denis. Introduction. Oxford. Franz Joseph Haydn: Missa brevis Sancti Joannis de Deo, Hob. XXII:7, Little Organ Mass, with prolongation by Michael Haydn. Oxford University Press Sources Jones, Jill Ann: A Historical Study of Joseph Haydn's Missa brevis Sancti Joannis de Deo Hob XXII:7 San Jose State University 1994 Masses by Joseph Haydn Music for orchestra and organ 1775 compositions Compositions in B-flat major