Não informado. (1965). Farm Building Progress. Scottish Farm Buildings Investigation Unit.
Chicago-viite (17. p.)Não informado. Farm Building Progress. Aberdeen, Escocia: Scottish Farm Buildings Investigation Unit, 1965.
MLA-viite (8. p.)Não informado. Farm Building Progress. Scottish Farm Buildings Investigation Unit, 1965.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.