Speaking basicde David ChoMateriasEnglish languageStudy and teachingForeign speakersPronunciation by foreign speakersSpoken EnglishPronunciationEdiciones (1)Speaking basic (2007)Hackers · inglés · ISBN 9788990700414Más obras de David ChoHHackers TOEFL , WritingHackers TOEFL , WritingHackers TOEFLHackers Toefl Reading with 1CD: 2nd iBT Edition (Korean Version)