APA (7th ed.) Citation

Wagner, J., Bosque Maurel, J., & Vicens Vives, J. (1971). Universo: Geografía general (12. ed.). Vicens-Vives.

Chicago Style (17th ed.) Citation

Wagner, Julius, Joaquín Bosque Maurel, and Jaime Vicens Vives. Universo: Geografía General. 12. ed. Barcelona: Vicens-Vives, 1971.

MLA (9th ed.) Citation

Wagner, Julius, et al. Universo: Geografía General. 12. ed. Vicens-Vives, 1971.