APA (7th ed.) Citation

Hofstätter, H. H., & Pixa, H. (1971). Historia universal comparada. Plaza & Janés.

Chicago Style (17th ed.) Citation

Hofstätter, Hans H., and Hannes Pixa. Historia Universal Comparada. Barcelona: Plaza & Janés, 1971.

MLA (9th ed.) Citation

Hofstätter, Hans H., and Hannes Pixa. Historia Universal Comparada. Plaza & Janés, 1971.

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