Não informado. (1950). Rural advisory leaflet. Edinburgh and East of Scotland College of Agriculture.
Citação do estilo Chicago (17ª ed.)Não informado. Rural Advisory Leaflet. Edinburgh, Inglaterra: Edinburgh and East of Scotland College of Agriculture, 1950.
Citação MLA (8ª ed.)Não informado. Rural Advisory Leaflet. Edinburgh and East of Scotland College of Agriculture, 1950.
警告：这些引文格式不一定是100％准确.