Ohio Wine Producers Association. (1992). Shamrock Vineyard, 1992. https://oaks.kent.edu/node/5888
Ohio Wine Producers Association. 1992. “Shamrock Vineyard, 1992”. https://oaks.kent.edu/node/5888.
Ohio Wine Producers Association. Shamrock Vineyard, 1992. 1 May 1992, https://oaks.kent.edu/node/5888.