APA (7th ed.) Citation

Otto, E. (1878). German conversation-grammar: A new and practical method of learning the German language (18th ed.). Julius Groos [etc.].

Chicago Style (17th ed.) Citation

Otto, Emil. German Conversation-grammar: A New and Practical Method of Learning the German Language. 18th ed. Heidelberg [etc.]: Julius Groos [etc.], 1878.

MLA (9th ed.) Citation

Otto, Emil. German Conversation-grammar: A New and Practical Method of Learning the German Language. 18th ed. Julius Groos [etc.], 1878.