APA (7th ed.) Citation

Hansen, B., & Haan, F. d. (2009). Modals in the languages of Europe: A reference work. Mouton de Gruyter.

Chicago Style (17th ed.) Citation

Hansen, Björn, and Ferdinand de Haan. Modals in the Languages of Europe: A Reference Work. Berlin New York: Mouton de Gruyter, 2009.

MLA (9th ed.) Citation

Hansen, Björn, and Ferdinand de Haan. Modals in the Languages of Europe: A Reference Work. Mouton de Gruyter, 2009.