APA (7th ed.) Citation

Knowles, F., & Watkins, J. E. (1947). A practical course in agricultural chemistry: For senior students of agriculture, dairying, horticulture and poultry husbandry ([2d ed.].). Macmillan.

Chicago Style (17th ed.) Citation

Knowles, Frank, and Job Elphin Watkins. A Practical Course in Agricultural Chemistry: For Senior Students of Agriculture, Dairying, Horticulture and Poultry Husbandry. [2d ed.]. London: Macmillan, 1947.

MLA (9th ed.) Citation

Knowles, Frank, and Job Elphin Watkins. A Practical Course in Agricultural Chemistry: For Senior Students of Agriculture, Dairying, Horticulture and Poultry Husbandry. [2d ed.]. Macmillan, 1947.