1 "미국의 유기농식품-현황과 전망" 10 (10): 2002
2 "U.S. Organic Farming Emerges in the 1990s-Adoption of Certified Systems" ERS/USDA 2001
3 "U.S. Organic Farming" 2002.11
4 "Recent Growth Patterns in the U.S. Organic Foods Market" ERS/USDA 2002
5 "Organic Wheat Production in the United States" ERS/USDA. 2001
6 "Organic Food Markets in Transition" ERS/USDA 2000
7 "Organic Food Industry Taps Growing American Market" 2002.10
8 "Agricultural Marketing Service"
1 "미국의 유기농식품-현황과 전망" 10 (10): 2002
2 "U.S. Organic Farming Emerges in the 1990s-Adoption of Certified Systems" ERS/USDA 2001
3 "U.S. Organic Farming" 2002.11
4 "Recent Growth Patterns in the U.S. Organic Foods Market" ERS/USDA 2002
5 "Organic Wheat Production in the United States" ERS/USDA. 2001
6 "Organic Food Markets in Transition" ERS/USDA 2000
7 "Organic Food Industry Taps Growing American Market" 2002.10
8 "Agricultural Marketing Service"