APA Citation

Helen S. Solorzano, J. P. S. (1999). Northstar focus on listening and speaking (intermediate). Longman.

Chicago Style Citation

Helen S. Solorzano, Jennifer P.L. Schmidt. Northstar Focus On Listening and Speaking (intermediate). Longman, 1999.

MLA Citation

Helen S. Solorzano, Jennifer P.L. Schmidt. Northstar Focus On Listening and Speaking (intermediate). Longman, 1999.

Warning: These citations may not always be 100% accurate.