APA (7th ed.) Citation

Degenkolb, O. H. (1977). Concrete box girder bridges / by O.H. Degenkolb. American Concrete Institute.

Chicago Style (17th ed.) Citation

Degenkolb, O. H. Concrete Box Girder Bridges / by O.H. Degenkolb. American Concrete Institute, 1977.

MLA (9th ed.) Citation

Degenkolb, O. H. Concrete Box Girder Bridges / by O.H. Degenkolb. American Concrete Institute, 1977.

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