U.S. Department of Labor, Bureau of Labor Statistics(BLS)
코로나19 대유행이 항공과 호텔 산업의 투입가와 산출가에 미치는 영향 : 새로운 노동통계국(BLS) 데이터 참조 (The impact of the COVID-19 pandemic on the input and output prices of the airline and hotel industries: Insights from new BLS data)
U.S. Department of Labor, Bureau of Labor Statistics(BLS)