Wong, Jennifer, &quot; Organic coffee: gearing up for a high - quality product &quot; , APROMA/Bimonthly Review, No. 26, l993 p. 28.
Wong, Jennifer, &quot; Organic coffee: gearing up for a high-quality product &quot; , APROMA/Bimonthly Review, № 26, 1993 год, стр. 28.