APA
"Roberts S., "Ernest M. & "Heller P.Complete Java 2 certification study guide. New Delhi: .
Chicago
"Roberts Simon", "Ernest Michael" and "Heller Philip".Complete Java 2 certification study guide. New Delhi: .
Harvard
"Roberts S., "Ernest M. and "Heller P.Complete Java 2 certification study guide. New Delhi: .
MLA
"Roberts Simon", "Ernest Michael" and "Heller Philip".New Delhi: . .