Markko Vineyard. (1968). 1968, Markko Vineyard. https://oaks.kent.edu/node/3456
Markko Vineyard. 1968. “1968, Markko Vineyard”. https://oaks.kent.edu/node/3456.
Markko Vineyard. 1968, Markko Vineyard. 1 Dec. 1968, https://oaks.kent.edu/node/3456.