George, P., & Bordonaba, P. (1971). Geografía activa (2. ed.). Ariel.
Chicago Style (17th ed.) CitationGeorge, Pierre, and Pablo Bordonaba. Geografía Activa. 2. ed. Barcelona [etc.]: Ariel, 1971.
MLA (9th ed.) CitationGeorge, Pierre, and Pablo Bordonaba. Geografía Activa. 2. ed. Ariel, 1971.
Warning: These citations may not always be 100% accurate.