APA Style
Lewis, W, V, J, J, W, G, L. (1977).
Introduction to Hydrology second edition .
New York:
Harper & Row Publishers.
MLA Style
Lewis, Warren, Viessman;, JR., Jhon, W.Knapp;, Gary, L..
"Introduction to Hydrology second edition".
New York:
Harper & Row Publishers,
1977.
Text.