APA (7e ed.) Bronvermelding

Knapp, F. M. Motor Truck Logging Methods Engineering Experiment Station Series, Bulletin No. 12.

Chicago (17e ed.) Bronvermelding

Knapp, Frederick Malcolm. Motor Truck Logging Methods Engineering Experiment Station Series, Bulletin No. 12.

MLA (9e ed.) Bronvermelding

Knapp, Frederick Malcolm. Motor Truck Logging Methods Engineering Experiment Station Series, Bulletin No. 12.

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