The plainsong of the Mass :
adapted from the Sarum Gradual to the English text : Part 1, The Ordinary, containing Kyrie, Creed, Sanctus, Agnus Dei and Gloria in excelsis.

APA Citation

Church of England., Plainsong and Mediaeval Music Society (Great Britain). (1896). The plainsong of the Mass: adapted from the Sarum Gradual to the English text : Part 1, The Ordinary, containing Kyrie, Creed, Sanctus, Agnus Dei and Gloria in excelsis. London: The Plainsong and Mediaeval Music Society.

MLA Citation

Church of England, and Plainsong and Mediaeval Music Society (Great Britain). The Plainsong of the Mass: Adapted From the Sarum Gradual to the English Text : Part 1, The Ordinary, Containing Kyrie, Creed, Sanctus, Agnus Dei And Gloria In Excelsis. London: The Plainsong and Mediaeval Music Society, 1896.