Cita APA (7th ed.)
Dobson, J. M., & Sedwick, F. Conversation in English: Points of Departure. American Book Company.
Cita Chicago (17th ed.)
Dobson, Julia M., i Frank Sedwick. Conversation in English: Points of Departure. Nueva York, EUA: American Book Company.
Cita MLA (9th ed.)
Dobson, Julia M., i Frank Sedwick. Conversation in English: Points of Departure. American Book Company.
Atenció: Aquestes cites poden no estar 100% correctes.