Roberts, I. P. (1897). The fertility of the land: A summary sketch of the relationship of farm-practice to the maintaining and increasing of the productivity of the soil. Macmillan.
Chicago Style (17th ed.) CitationRoberts, Isaac Phillips. The Fertility of the Land: A Summary Sketch of the Relationship of Farm-practice to the Maintaining and Increasing of the Productivity of the Soil. New York: Macmillan, 1897.
MLA (9th ed.) CitationRoberts, Isaac Phillips. The Fertility of the Land: A Summary Sketch of the Relationship of Farm-practice to the Maintaining and Increasing of the Productivity of the Soil. Macmillan, 1897.
Warning: These citations may not always be 100% accurate.