Markko Vineyard. (1976). Friends of the Vineyard, Summer 1976. https://oaks.kent.edu/node/3396
Markko Vineyard. 1976. “Friends of the Vineyard, Summer 1976”. https://oaks.kent.edu/node/3396.
Markko Vineyard. Friends of the Vineyard, Summer 1976. 1 July 1976, https://oaks.kent.edu/node/3396.