APA (7th ed.) Citation

Chandler, A. B. (1970). Space mercenaries. Priory Books.

Chicago Style (17th ed.) Citation

Chandler, A. Bertram. Space Mercenaries. London: Priory Books, 1970.

MLA (8th ed.) Citation

Chandler, A. Bertram. Space Mercenaries. Priory Books, 1970.