APA (7th ed.) Citation

Hopper, E., & Goñi, J. (2005). Hopper. Unidad Editorial.

Chicago Style (17th ed.) Citation

Hopper, Edward, and Javier Goñi. Hopper. [Madrid]: Unidad Editorial, 2005.

MLA (9th ed.) Citation

Hopper, Edward, and Javier Goñi. Hopper. Unidad Editorial, 2005.