APA (7th ed.) Citation

Lytle, W. S. (1976). Oil fields of the Greater Pittsburgh region. Pennsylvania Geological Survey.

Chicago Style (17th ed.) Citation

Lytle, William S. Oil Fields of the Greater Pittsburgh Region. Harrisburg: Pennsylvania Geological Survey, 1976.

MLA (9th ed.) Citation

Lytle, William S. Oil Fields of the Greater Pittsburgh Region. Pennsylvania Geological Survey, 1976.

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