APA Style
Koch,P. (1991).
Spiral Grain and Annual Ring Width in Natural Unthinned Stands of Lodgepole Pine in North America (USDA) .
Ogden, Utah:
USDA Forest Service.
Chicago Style
Koch,P.
Spiral Grain and Annual Ring Width in Natural Unthinned Stands of Lodgepole Pine in North America (USDA).
Ogden, Utah:
USDA Forest Service,
1991.
.
MLA Style
Koch,P.
Spiral Grain and Annual Ring Width in Natural Unthinned Stands of Lodgepole Pine in North America (USDA).
Ogden, Utah:
USDA Forest Service,
1991.
.
Turabian Style
Koch,P.
Spiral Grain and Annual Ring Width in Natural Unthinned Stands of Lodgepole Pine in North America (USDA).
Ogden, Utah:
USDA Forest Service,
1991.
.