Solórzano, H. S., & Schmidt, J. P. L. (1998). NorthStar: Focus on listening and speaking: intermediate. Longman.
Cita Chicago Style (17a ed.)Solórzano, Helen S., y Jennifer P. L. Schmidt. NorthStar: Focus on Listening and Speaking: Intermediate. New York: Longman, 1998.
Cita MLA (8a ed.)Solórzano, Helen S., y Jennifer P. L. Schmidt. NorthStar: Focus on Listening and Speaking: Intermediate. Longman, 1998.
Precaución: Estas citas no son 100% exactas.