APA (7th ed.) Citation

Bøgh, K. (1991). Three centuries at the Royal Library (Rev. ed.).

Chicago Style (17th ed.) Citation

Bøgh, Knud. Three Centuries at the Royal Library. Rev. ed. Copenhagen, 1991.

MLA (9th ed.) Citation

Bøgh, Knud. Three Centuries at the Royal Library. Rev. ed. 1991.