Não informado. (1971). Journal of Agricultural Research. Government of the Punjab, Department of Agriculture.
Citação do estilo Chicago (17ª ed.)Não informado. Journal of Agricultural Research. Lahore, Paquistao: Government of the Punjab, Department of Agriculture, 1971.
Citação MLA (8ª ed.)Não informado. Journal of Agricultural Research. Government of the Punjab, Department of Agriculture, 1971.
警告：这些引文格式不一定是100％准确.