Darwin, C. R., Burkhardt, F., & Rubio Díez, A. M. (1999). Cartas de Charles Darwin (1825-1859). Cambridge University Press.
Chicago Style (17th ed.) CitationDarwin, Charles Robert, Frederick Burkhardt, and Ana María Rubio Díez. Cartas De Charles Darwin (1825-1859). Madrid: Cambridge University Press, 1999.
MLA (9th ed.) CitationDarwin, Charles Robert, et al. Cartas De Charles Darwin (1825-1859). Cambridge University Press, 1999.
Warning: These citations may not always be 100% accurate.