APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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