APA (7th ed.) Citation

Flippo, H. N. (1988). Low-flow routing in the Lehigh and Delaware rivers, Pennsylvania. U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Flippo, Herbert N. Low-flow Routing in the Lehigh and Delaware Rivers, Pennsylvania. Harrisburg, Pennsylvania: U.S. Geological Survey, 1988.

MLA (9th ed.) Citation

Flippo, Herbert N. Low-flow Routing in the Lehigh and Delaware Rivers, Pennsylvania. U.S. Geological Survey, 1988.