Cita APA (7th ed.)
Sierra, K., & Bates, B. (2003). Head first ejb. Shroff Pub.
Cita Chicago (17th ed.)
Sierra, Kathy, i Bert Bates. Head First Ejb. Kolkata: Shroff Pub, 2003.
Cita MLA (9th ed.)
Sierra, Kathy, i Bert Bates. Head First Ejb. Shroff Pub, 2003.
Atenció: Aquestes cites poden no estar 100% correctes.