APA (7th ed.) Citation

Gowan, D. (1972). Slurry and farm waste disposal / (by) Douglas Gowan. Farming Press.

Chicago Style (17th ed.) Citation

Gowan, Douglas. Slurry and Farm Waste Disposal / (by) Douglas Gowan. Ipswich: Farming Press, 1972.

MLA (9th ed.) Citation

Gowan, Douglas. Slurry and Farm Waste Disposal / (by) Douglas Gowan. Farming Press, 1972.

Warning: These citations may not always be 100% accurate.