Cita APA (7a ed.)

Otto, E., & Onions, C. T. (1905). French Conversation - Grammar: Method Gaspey- Otto - Sauer. J. Groos.

Cita Chicago Style (17a ed.)

Otto, Emil, y C. T. Onions. French Conversation - Grammar: Method Gaspey- Otto - Sauer. Heidelberg: J. Groos, 1905.

Cita MLA (9a ed.)

Otto, Emil, y C. T. Onions. French Conversation - Grammar: Method Gaspey- Otto - Sauer. J. Groos, 1905.