APA (7e ed.) Bronvermelding

(1995). System-specific spare bus ratios. Transportation Research Board, National Research Council.

Chicago (17e ed.) Bronvermelding

System-specific Spare Bus Ratios. Washington, D.C.: Transportation Research Board, National Research Council, 1995.

MLA (8e ed.) Bronvermelding

System-specific Spare Bus Ratios. Transportation Research Board, National Research Council, 1995.

Let op: Deze citaties zijn niet altijd 100% accuraat.