APA (7th ed.) Citation

Meyer-Abich, A., & Vila valenti, J. Humboldt (1a. ed.). Salvat.

Chicago Style (17th ed.) Citation

Meyer-Abich, Adolf, and Juan Vila valenti. Humboldt. 1a. ed. Barcelona: Salvat.

MLA (9th ed.) Citation

Meyer-Abich, Adolf, and Juan Vila valenti. Humboldt. 1a. ed. Salvat.

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