APA

Cummings L., . (2014). The communication disorders workbook. Cambridge: Cambridge University Press.

Chicago

Cummings Louise, . 2014. The communication disorders workbook. Cambridge: Cambridge University Press.

Harvard

Cummings L., . (2014). The communication disorders workbook. Cambridge: Cambridge University Press.

MLA

Cummings Louise, . The communication disorders workbook. Cambridge: Cambridge University Press. 2014.