Donahue, R. L., Shickluna, J. C., Robertson, L. S., & Donahue, R. L. (1971). Soils: An introduction to soils and plant growth. Prentice-Hall.
Chicago Style (17th ed.) CitationDonahue, Roy L., John C. Shickluna, Lynn S. Robertson, and Roy Luther Donahue. Soils: An Introduction to Soils and Plant Growth. New Jersey: Prentice-Hall, 1971.
MLA (9th ed.) CitationDonahue, Roy L., et al. Soils: An Introduction to Soils and Plant Growth. Prentice-Hall, 1971.
Warning: These citations may not always be 100% accurate.