APA (7th ed.) Citation

Helfman, E. S. (1965). Rivers and watersheds in America's future. McKay.

Chicago Style (17th ed.) Citation

Helfman, Elizabeth S. Rivers and Watersheds in America's Future. New York: McKay, 1965.

MLA (9th ed.) Citation

Helfman, Elizabeth S. Rivers and Watersheds in America's Future. McKay, 1965.

Warning: These citations may not always be 100% accurate.