APA

Elmasri R., Carrick A. & Levine D. (2010). Operating systems: a spiral approach. New York: Mc Graw Hill.

Chicago

Elmasri Ramez, Carrick A.Gil and Levine David. 2010. Operating systems: a spiral approach. New York: Mc Graw Hill.

Harvard

Elmasri R., Carrick A. and Levine D. (2010). Operating systems: a spiral approach. New York: Mc Graw Hill.

MLA

Elmasri Ramez, Carrick A.Gil and Levine David. Operating systems: a spiral approach. New York: Mc Graw Hill. 2010.