APA (7th ed.) Citation
Gray, J. (1991). Discovering English: A pre-intermediate course (1.vyd.). Mladex.
Chicago Style (17th ed.) Citation
Gray, Joanna. Discovering English: A Pre-intermediate Course. 1.vyd. Bratislava: Mladex, 1991.
MLA (9th ed.) Citation
Gray, Joanna. Discovering English: A Pre-intermediate Course. 1.vyd. Mladex, 1991.
Warning: These citations may not always be 100% accurate.