APA (7th ed.) Citation

Harris, E., Velázquez, D., & López-Yarto Elizalde, A. (1991). Velázquez. Ephialte.

Chicago Style (17th ed.) Citation

Harris, Enriqueta, Diego Velázquez, and Amelia López-Yarto Elizalde. Velázquez. Vitoria-Gasteiz: Ephialte, 1991.

MLA (9th ed.) Citation

Harris, Enriqueta, et al. Velázquez. Ephialte, 1991.