Roberts, R. (2011). Celtx: Open source screenwriting : beginner's guide : write and market Hollywood-perfect movie scripts the free way! Packt Pub. Ltd..
Citação do estilo Chicago (17ª 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.
Citação MLA (9ª ed.)Roberts, Ralph. Celtx: Open Source Screenwriting : Beginner's Guide : Write and Market Hollywood-perfect Movie Scripts the Free Way! Packt Pub. Ltd., 2011.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.