APA (7th ed.) Citation

Sawyer, W. E. (1957). The first hundred years of Delaware County (First edition.). Wilbur C. Kriebel, Inc..

Chicago Style (17th ed.) Citation

Sawyer, William E. The First Hundred Years of Delaware County. First edition. Chester, PA: Wilbur C. Kriebel, Inc., 1957.

MLA (9th ed.) Citation

Sawyer, William E. The First Hundred Years of Delaware County. First edition. Wilbur C. Kriebel, Inc., 1957.