Blacker, W. (1845). An essay on the improvement to be made in the cultivation of small farms: By the introduction of green crops, and housefeeding the stock thereon: originally published in an address to the small farmers on the estates of the Earl of Gosford and Colonel Close, in the county of Armagh (Sixth edition.). W. Curry, Jun. and Co., Sackville-Street. London: R. Groombridge. Edinburgh: Blackwood and Sons.

Blacker, William. An Essay on the Improvement to Be Made in the Cultivation of Small Farms: By the Introduction of Green Crops, and Housefeeding the Stock Thereon: Originally Published in an Address to the Small Farmers on the Estates of the Earl of Gosford and Colonel Close, in the County of Armagh. Sixth edition. W. Curry, Jun. and Co., Sackville-Street. London: R. Groombridge. Edinburgh: Blackwood and Sons, 1845.