Ohio Wine Producers Association. (1990). Willow Hill Vineyards, 1990. https://oaks.kent.edu/node/5890
Ohio Wine Producers Association. 1990. “Willow Hill Vineyards, 1990”. https://oaks.kent.edu/node/5890.
Ohio Wine Producers Association. Willow Hill Vineyards, 1990. 1 Oct. 1990, https://oaks.kent.edu/node/5890.