APA (7th ed.) Citation

Preston, D. J., & Homedes Beutnagel, J. (2006). Tiranosaurio. Círculo de Lectores.

Chicago Style (17th ed.) Citation

Preston, Douglas J., and Jofre Homedes Beutnagel. Tiranosaurio. Barcelona: Círculo de Lectores, 2006.

MLA (9th ed.) Citation

Preston, Douglas J., and Jofre Homedes Beutnagel. Tiranosaurio. Círculo de Lectores, 2006.

Warning: These citations may not always be 100% accurate.