Cita APA (7th ed.)

Martin, P. (1986). Invasion of the ormazoids (1a. ed.). Severn House.

Cita Chicago (17th ed.)

Martin, Philip. Invasion of the Ormazoids. 1a. ed. Londres: Severn House, 1986.

Cita MLA (9th ed.)

Martin, Philip. Invasion of the Ormazoids. 1a. ed. Severn House, 1986.