Cita APA (7th ed.)

Bray, I. K. (2002). An introduction to requirements engineering. Addison-Wesley.

Cita Chicago (17th ed.)

Bray, Ian K. An Introduction to Requirements Engineering. Harlow: Addison-Wesley, 2002.

Cita MLA (8th ed.)

Bray, Ian K. An Introduction to Requirements Engineering. Addison-Wesley, 2002.