APA Edition Citation

Thorup, R. M. (1984). Ortho agronomy handbook: A practical guide to soil fertility and fertilizer use. Chevron Chemical Company Ortho Fertilizer Division.

Chicago Edition Citation

Thorup, R M. Ortho Agronomy Handbook: A Practical Guide to Soil Fertility and Fertilizer Use. San Francisco: Chevron Chemical Company Ortho Fertilizer Division, 1984.

MLA Edition Citation

Thorup, R M. Ortho Agronomy Handbook: A Practical Guide to Soil Fertility and Fertilizer Use. Chevron Chemical Company Ortho Fertilizer Division, 1984.