APA (7th ed.) Citation

Gatchell, C. J. (1967). A way to reduce highway guardrail costs: Machine-driving of wooden posts. U.S. Forest Service.

Chicago Style (17th ed.) Citation

Gatchell, Charles J. A Way to Reduce Highway Guardrail Costs: Machine-driving of Wooden Posts. Upper Darby, Pa.: U.S. Forest Service, 1967.

MLA (9th ed.) Citation

Gatchell, Charles J. A Way to Reduce Highway Guardrail Costs: Machine-driving of Wooden Posts. U.S. Forest Service, 1967.