Cita APA (7th ed.)

Vigne, G., Jönsson, J., & Hacar, F. (2014). Tunnels with rough walls and cavities. Universidad Pedagógica y Tecnológica de Colombia - UPTC.

Cita Chicago (17th ed.)

Vigne, Gabriele, Jimmy Jönsson, i Fernando Hacar. Tunnels with Rough Walls and Cavities. Universidad Pedagógica y Tecnológica de Colombia - UPTC, 2014.

Cita MLA (9th ed.)

Vigne, Gabriele, et al. Tunnels with Rough Walls and Cavities. Universidad Pedagógica y Tecnológica de Colombia - UPTC, 2014.