Penggayaan APA
SYSTEMS approach to hydrology. (1971).
Colorado:
Water Resources.
Chicago Style
SYSTEMS approach to hydrology.
.
Colorado:
Water Resources,
1971.
Text.
MLA Style
SYSTEMS approach to hydrology.
.
Colorado:
Water Resources,
1971.
Text.
Turabian Style
SYSTEMS approach to hydrology.
Colorado:
Water Resources,
1971.
Print.