Cita APA

Bretz, M. L., Dvorak, T., Kirschner, C., Bransdorfer, R., Kihyet, C., & Martínez de Velasco, J. Avance!: Intermediate spanish. S.n.l: MCGraw-Hill.

Citación estilo Chicago

Bretz, Marie Lee, Trisha Dvorak, Carl Kirschner, Rodney Bransdorfer, Constance Kihyet, and Javier Martínez de Velasco. Avance!: Intermediate Spanish. S.n.l: MCGraw-Hill.

Cita MLA

Bretz, Marie Lee, et al. Avance!: Intermediate Spanish. S.n.l: MCGraw-Hill.