Cite

[An introduction to harmony]. A New Edition (being the second) of an Introduction to Harmony.... Print (London: author)

MLA

Ernest Augustus, King of Hanover, 1771-1851. [An introduction to harmony]. A New Edition (being the second) of an Introduction to Harmony.... Print (London: author). Box 718. 1815. https://collections.library.yale.edu/catalog/10000238.

APA, 6th edition

Ernest Augustus, King of Hanover, 1771-1851. (["Box 718"])(1815)[[An introduction to harmony]. A New Edition (being the second) of an Introduction to Harmony.... Print (London: author)]. https://collections.library.yale.edu/catalog/10000238.