Cita APA (7th ed.)

Koontz, D. R. (1979). A darkness in my soul. Dennis Dobson.

Cita Chicago (17th ed.)

Koontz, Dean R. A Darkness in My Soul. London: Dennis Dobson, 1979.

Cita MLA (8th ed.)

Koontz, Dean R. A Darkness in My Soul. Dennis Dobson, 1979.