Gaya APA

Hignett, , H. (1969). A sideway impact test into a 12.2m (40 ft) lighting column fitted with a break-away joint . : TRRL.

Gaya MLA

Hignett, , H.J.. "A sideway impact test into a 12.2m (40 ft) lighting column fitted with a break-away joint". : TRRL, 1969. Chart.