Ahn's first [-fourth] German book[s],
being the first [-fourth] division[s] of Ahn's rudiments of the German language.
By Dr. P. Henn.
APA Citation
Ahn, F. (Franz)., Henn, P. (Peter). (187376). Ahn's first [-fourth] German book[s]: being the first [-fourth] division[s] of Ahn's rudiments of the German language. New York: E. Steiger.
MLA Citation
Ahn, F. (Franz), 1796-1865, and P. (Peter) Henn. Ahn's First [-fourth] German Book[s]: Being the First [-fourth] Division[s] of Ahn's Rudiments of the German Language. New York: E. Steiger, 187376.
Warning: These citations may not always be complete (especially for serials).