APA (7th ed.) Citation

Humboldt, W. v., Losonsky, M., & Heath, P. (1999). On language: On the diversity of human language construction and its influence on the mental development of the human species. Cambridge University Press.

Chicago Style (17th ed.) Citation

Humboldt, Wilhelm von, Michael Losonsky, and Peter Heath. On Language: On the Diversity of Human Language Construction and Its Influence on the Mental Development of the Human Species. New York: Cambridge University Press, 1999.

MLA (9th ed.) Citation

Humboldt, Wilhelm von, et al. On Language: On the Diversity of Human Language Construction and Its Influence on the Mental Development of the Human Species. Cambridge University Press, 1999.