Cita APA (7th ed.)

(1928). Field manual and fiscal regulations: Primary road and bridge work. Iowa State Highway Commission.

Cita Chicago (17th ed.)

Field Manual and Fiscal Regulations: Primary Road and Bridge Work. Ames: Iowa State Highway Commission, 1928.

Cita MLA (9th ed.)

Field Manual and Fiscal Regulations: Primary Road and Bridge Work. Iowa State Highway Commission, 1928.