Cita APA (7th ed.)

Pratchett, T. (1976). The dark side of the sun. Corgi Books.

Cita Chicago (17th ed.)

Pratchett, Terry. The Dark Side of the Sun. London: Corgi Books, 1976.

Cita MLA (8th ed.)

Pratchett, Terry. The Dark Side of the Sun. Corgi Books, 1976.