Ahn's first German book :
being the first division of Ahn's rudiments of the German language /
by P. Henn.
APA Citation
Ahn, F. (Franz)., Henn, P. (Peter). (1873). Ahn's first German book: being the first division of Ahn's rudiments of the German language. New York: E. Steiger & Co..
MLA Citation
Ahn, F. (Franz), 1796-1865, and P. (Peter) Henn. Ahn's First German Book: Being the First Division of Ahn's Rudiments of the German Language. New York: E. Steiger & Co., 1873.
Warning: These citations may not always be complete (especially for serials).