एपीए उद्धरण

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

शिकागो स्टाइल उद्धरण

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

एमएलए उद्धरण

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