Cita APA (7a ed.)

Otto, E. (1875). German conversation-grammar: A new and practical method of learning the German language (15th ed.). Julius Groos [etc.].

Cita Chicago Style (17a ed.)

Otto, Emil. German Conversation-grammar: A New and Practical Method of Learning the German Language. 15th ed. Heidelberg [etc.]: Julius Groos [etc.], 1875.

Cita MLA (9a ed.)

Otto, Emil. German Conversation-grammar: A New and Practical Method of Learning the German Language. 15th ed. Julius Groos [etc.], 1875.