Gaya APA

Watanatada, T. (1987). The Highway Design And Maintenance Standards Series : Vehicle Speeds and Operating Costs Models For Road Planning and Management . Washington: The World Bank.

Gaya MLA

Watanatada, Thawat. "The Highway Design And Maintenance Standards Series : Vehicle Speeds and Operating Costs Models For Road Planning and Management". Washington: The World Bank, 1987. Buku.