APA (7th ed.) Citation

Gascoigne, S. (1985). The Purple Planet: Micro-PROLOG for the Spectrum 48K. Macmillan Education UK. https://doi.org/10.1007/978-1-349-07860-8

Chicago Style (17th ed.) Citation

Gascoigne, Serafim. The Purple Planet: Micro-PROLOG for the Spectrum 48K. London: Macmillan Education UK, 1985. https://doi.org/10.1007/978-1-349-07860-8.

MLA (9th ed.) Citation

Gascoigne, Serafim. The Purple Planet: Micro-PROLOG for the Spectrum 48K. Macmillan Education UK, 1985. https://doi.org/10.1007/978-1-349-07860-8.