APA

Zahran S. S., Butcher M., . (2007). Computer World Series. Cairo: Bloom Press.

Chicago

Zahran Sahar Sa'd, Butcher Margaret, . 2007. Computer World Series. Cairo: Bloom Press.

Harvard

Zahran S. S., Butcher M., . (2007). Computer World Series. Cairo: Bloom Press.

MLA

Zahran Sahar Sa'd, Butcher Margaret, . Computer World Series. Cairo: Bloom Press. 2007.