Cita APA (7th ed.)

Roberts, R. (2011). Celtx: Open source screenwriting : beginner's guide : write and market Hollywood-perfect movie scripts the free way! Packt Pub. Ltd..

Cita Chicago (17th ed.)

Roberts, Ralph. Celtx: Open Source Screenwriting : Beginner's Guide : Write and Market Hollywood-perfect Movie Scripts the Free Way! Olton, Birmingham: Packt Pub. Ltd., 2011.

Cita MLA (9th ed.)

Roberts, Ralph. Celtx: Open Source Screenwriting : Beginner's Guide : Write and Market Hollywood-perfect Movie Scripts the Free Way! Packt Pub. Ltd., 2011.