Cita APA

Dobson, J. M., & Dobson, J. M. (1989). Effective techniques for english conversation groups. Washington, D.C.: English Language Programs División, Bureau of Educational and Cultural Affairs.

Citación estilo Chicago

Dobson, Julia M., y Julia M. Dobson. Effective Techniques for English Conversation Groups. Washington, D.C.: English Language Programs División, Bureau of Educational and Cultural Affairs, 1989.

Cita MLA

Dobson, Julia M., y Julia M. Dobson. Effective Techniques for English Conversation Groups. Washington, D.C.: English Language Programs División, Bureau of Educational and Cultural Affairs, 1989.