Doherty, P. C. (1994). The song of a dark angel. Headline.
Cita Chicago (17th ed.)Doherty, P. C. The Song of a Dark Angel. London: Headline, 1994.
Cita MLA (8th ed.)Doherty, P. C. The Song of a Dark Angel. Headline, 1994.
Atenció: Aquestes cites poden no estar 100% correctes.