Cita APA (7a ed.)
Doorley, D. (1991). Discovering English: Workbook (1.vyd.). Mladex.
Cita Chicago Style (17a ed.)
Doorley, Damian. Discovering English: Workbook. 1.vyd. Bratislava: Mladex, 1991.
Cita MLA (9a ed.)
Doorley, Damian. Discovering English: Workbook. 1.vyd. Mladex, 1991.
Precaución: Estas citas no son 100% exactas.