APA-viite (7. p.)
Walia, E. (2017). Operating system concepts (2nd ed.). Khanna Book Publishing Co.
Chicago-viite (17. p.)
Walia, Ekta. Operating System Concepts. 2nd ed. New Delhi: Khanna Book Publishing Co, 2017.
MLA-viite (9. p.)
Walia, Ekta. Operating System Concepts. 2nd ed. Khanna Book Publishing Co, 2017.
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