APA

Oranen L., . (1977). Use of safety belts. Investigation into effect of compulsory use of safety belts on volume of use. Helsingfors: Central Organization for Traffic Safety in Finland. Report nr 19.

Chicago

Oranen L, . 1977. Use of safety belts. Investigation into effect of compulsory use of safety belts on volume of use. Helsingfors: Central Organization for Traffic Safety in Finland. Report nr 19.

Harvard

Oranen L., . (1977). Use of safety belts. Investigation into effect of compulsory use of safety belts on volume of use. Helsingfors: Central Organization for Traffic Safety in Finland. Report nr 19.

MLA

Oranen L, . Use of safety belts. Investigation into effect of compulsory use of safety belts on volume of use. Helsingfors: Central Organization for Traffic Safety in Finland. Report nr 19. 1977.