APA-viite (7. p.)

National Research Council (U.S.). Highway Research Board. (1951). Volcanic ash and laterite soils in highway construction: Presented at the Thirtieth Annual Meeting, 1951. Highway Research Board.

Chicago-viite (17. p.)

National Research Council (U.S.). Highway Research Board. Volcanic Ash and Laterite Soils in Highway Construction: Presented at the Thirtieth Annual Meeting, 1951. Washington, D.C: Highway Research Board, 1951.

MLA-viite (9. p.)

National Research Council (U.S.). Highway Research Board. Volcanic Ash and Laterite Soils in Highway Construction: Presented at the Thirtieth Annual Meeting, 1951. Highway Research Board, 1951.