Cita APA (7th ed.)
Lewis C S. (1993). The pilgrim's regress. Collins.
Cita Chicago (17th ed.)
Lewis C S. The Pilgrim's Regress. Glasgow: Collins, 1993.
Cita MLA (9th ed.)
Lewis C S. The Pilgrim's Regress. Collins, 1993.
Atenció: Aquestes cites poden no estar 100% correctes.