APA Style
Ahmad, S., Layser,E.F. (1979).
Preliminary Classification for the Coniferous Forest and Woodland Series of Arizona and New Mexico (USDA) .
Colorado:
USDA Forest Service.
Chicago Style
Ahmad, S., Layser,E.F.
Preliminary Classification for the Coniferous Forest and Woodland Series of Arizona and New Mexico (USDA).
Colorado:
USDA Forest Service,
1979.
.
MLA Style
Ahmad, S., Layser,E.F.
Preliminary Classification for the Coniferous Forest and Woodland Series of Arizona and New Mexico (USDA).
Colorado:
USDA Forest Service,
1979.
.
Turabian Style
Ahmad, S., Layser,E.F.
Preliminary Classification for the Coniferous Forest and Woodland Series of Arizona and New Mexico (USDA).
Colorado:
USDA Forest Service,
1979.
.