APA-referens (7:e uppl.)

Catholic Summer School of America. (1927). A paradise of nature: A paradise for children, a paradise for youth, a paradise for adults, a paradise for the old, a paradise of earthly joy, an intellectual paradise, a paradise of heavenly bliss. Catholic Summer School.

Chicago-referens (17:e uppl.)

Catholic Summer School of America. A Paradise of Nature: A Paradise for Children, a Paradise for Youth, a Paradise for Adults, a Paradise for the Old, a Paradise of Earthly Joy, an Intellectual Paradise, a Paradise of Heavenly Bliss. New York City: Catholic Summer School, 1927.

MLA-referens (8:e uppl.)

Catholic Summer School of America. A Paradise of Nature: A Paradise for Children, a Paradise for Youth, a Paradise for Adults, a Paradise for the Old, a Paradise of Earthly Joy, an Intellectual Paradise, a Paradise of Heavenly Bliss. Catholic Summer School, 1927.

Varning: dessa hänvisningar är inte alltid fullständigt riktiga.