Cita APA (7a ed.)

Bengtson, H. (2019). Circular Culvert Design Calculations. McGraw-Hill Education LLC..

Cita Chicago Style (17a ed.)

Bengtson, Harlan. Circular Culvert Design Calculations. New York, N.Y.: McGraw-Hill Education LLC., 2019.

Cita MLA (8a ed.)

Bengtson, Harlan. Circular Culvert Design Calculations. McGraw-Hill Education LLC., 2019.