(1938). The key of heaven: A selection of prayers and devotional exercises for the use of Catholics in accordance with all recent Pontifical decrees. Regina Press.
Chicago Style (17th ed.) CitationThe Key of Heaven: A Selection of Prayers and Devotional Exercises for the Use of Catholics in Accordance with All Recent Pontifical Decrees. New York: Regina Press, 1938.
MLA (8th ed.) CitationThe Key of Heaven: A Selection of Prayers and Devotional Exercises for the Use of Catholics in Accordance with All Recent Pontifical Decrees. Regina Press, 1938.
Warning: These citations may not always be 100% accurate.