APA Style
Ketchum, J.L.F., Landgraf,A.E. (1970).
Forest Insect Conditions in The United States 1969 (USDA) .
Louisiana:
USDA Forest Service.
Chicago Style
Ketchum, J.L.F., Landgraf,A.E.
Forest Insect Conditions in The United States 1969 (USDA).
Louisiana:
USDA Forest Service,
1970.
.
MLA Style
Ketchum, J.L.F., Landgraf,A.E.
Forest Insect Conditions in The United States 1969 (USDA).
Louisiana:
USDA Forest Service,
1970.
.
Turabian Style
Ketchum, J.L.F., Landgraf,A.E.
Forest Insect Conditions in The United States 1969 (USDA).
Louisiana:
USDA Forest Service,
1970.
.