Gaya APA

Laboratory, T, A, R, R. (1993). A Guide to The Structural Design of Bitumen-Surfaced Roads in Tropical and Sub-Tropical Countries . United Kingdom: TRRL.

Gaya MLA

Laboratory, Transport, And, Road, Research. "A Guide to The Structural Design of Bitumen-Surfaced Roads in Tropical and Sub-Tropical Countries". United Kingdom: TRRL, 1993. Text.