Esterer, A. (1994). A Brief History of Markko Vineyard. https://oaks.kent.edu/node/3451
Esterer, Arnulf. 1994. “A Brief History of Markko Vineyard”. https://oaks.kent.edu/node/3451.
Esterer, A. A Brief History of Markko Vineyard. 1 Nov. 1994, https://oaks.kent.edu/node/3451.