APA (7th ed.) Citation

Theaker, C. J., & Brookes, G. R. A practical course on operating systems.

Chicago Style (17th ed.) Citation

Theaker, Colin J., and Graham R. Brookes. A Practical Course on Operating Systems.

MLA (9th ed.) Citation

Theaker, Colin J., and Graham R. Brookes. A Practical Course on Operating Systems.

Warning: These citations may not always be 100% accurate.