APA
Keenan M., . (2000). Care for creation. Cdd. del Vaticano: Vatican Press.
Chicago
Keenan Marjorie, . 2000. Care for creation. Cdd. del Vaticano: Vatican Press.
Harvard
Keenan M., . (2000). Care for creation. Cdd. del Vaticano: Vatican Press.
MLA
Keenan Marjorie, . Care for creation. Cdd. del Vaticano: Vatican Press. 2000.