APA (7th ed.) Citation

Humboldt, W. v., Wolf, F. A., & Mattson, P. (1990). Briefe an Friedrich August Wolf. W. de Gruyter.

Chicago Style (17th ed.) Citation

Humboldt, Wilhelm von, F. A. Wolf, and Philip Mattson. Briefe an Friedrich August Wolf. Berlin ; New York: W. de Gruyter, 1990.

MLA (9th ed.) Citation

Humboldt, Wilhelm von, et al. Briefe an Friedrich August Wolf. W. de Gruyter, 1990.