abstract:Marialis Cultus is the title of a Mariological Apostolic Letter by Pope Paul VI issued on February 2, 1974.Pope Paul VI's Apostolic Letter Marialis CultusAnn Ball, 2003 Encyclopedia of Catholic Devotions and Practices ISBN 0-87973-910-X page 14Peter Stravinskas, 2002, Catholic Dictionary, OSV Press ISBN 978-0-87973-390-2 pages 370-371