APA (7th ed.) Citation

BLACK, U. (1991). OSI: A model for computer communication standards. Prentice Hall.

Chicago Style (17th ed.) Citation

BLACK, Uyless. OSI: A Model for Computer Communication Standards. London: Prentice Hall, 1991.

MLA (9th ed.) Citation

BLACK, Uyless. OSI: A Model for Computer Communication Standards. Prentice Hall, 1991.