APA
(1964). Balloon logging systems. Phase II - logistics study: Contract 19-25. Portland: U. S. Department of Agriculture Forest Service.
Chicago
1964. Balloon logging systems. Phase II - logistics study: Contract 19-25. Portland: U. S. Department of Agriculture Forest Service.
Harvard
(1964). Balloon logging systems. Phase II - logistics study: Contract 19-25. Portland: U. S. Department of Agriculture Forest Service.
MLA
Balloon logging systems. Phase II - logistics study: Contract 19-25. Portland: U. S. Department of Agriculture Forest Service. 1964.