MLA

Beer, Wilhelm, 1797-1850. Mappa selenographica [cartographic material] : totam lunae hemisphaeram visibilem complectens observationibus propriis : quatuor sectionibus constructa et delineata / Suae Majestati Friderico Sexto, regi daniae illustrissimo summa veneratione dedicata ; a. BRBL_00196. 1834. https://collections.library.yale.edu/catalog/15874716.

APA, 6th edition

Beer, Wilhelm, 1797-1850. (["BRBL_00196"])(1834)[Mappa selenographica [cartographic material] : totam lunae hemisphaeram visibilem complectens observationibus propriis : quatuor sectionibus constructa et delineata / Suae Majestati Friderico Sexto, regi daniae illustrissimo summa veneratione dedicata ; a]. https://collections.library.yale.edu/catalog/15874716.