Παραπομπή σε μορφή APA (7η εκδ.)

Douglass, B. P. (1999). Doing hard time: Developing real-time systems with UML, objects, frameworks, and patterns. Addison-Wesley.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Douglass, Bruce Powel. Doing Hard Time: Developing Real-time Systems with UML, Objects, Frameworks, and Patterns. Reading, Mass: Addison-Wesley, 1999.

Παραπομπή σε μορφή MLA (8th εκδ.)

Douglass, Bruce Powel. Doing Hard Time: Developing Real-time Systems with UML, Objects, Frameworks, and Patterns. Addison-Wesley, 1999.