Lewis, C. (1998). The nativity [poem]. World Mission.
Cita Chicago (17th ed.)Lewis, C.S. "The Nativity [poem]." World Mission 1998.
Cita MLA (9th ed.)Lewis, C.S. "The Nativity [poem]." World Mission, 1998.
Atenció: Aquestes cites poden no estar 100% correctes.