APA

Ministerio dos Transportes, Empresa Brasileira de Planejamento de Transportes & GEIPOT. (1981). Research on the interrelationship between costs of highway construction, maintenance and utilization. Study 7. Brasilia: Ministerio dos Transportes.

Chicago

Ministerio dos Transportes, Empresa Brasileira de Planejamento de Transportes and GEIPOT. 1981. Research on the interrelationship between costs of highway construction, maintenance and utilization. Study 7. Brasilia: Ministerio dos Transportes.

Harvard

Ministerio dos Transportes, Empresa Brasileira de Planejamento de Transportes and GEIPOT. (1981). Research on the interrelationship between costs of highway construction, maintenance and utilization. Study 7. Brasilia: Ministerio dos Transportes.

MLA

Ministerio dos Transportes, Empresa Brasileira de Planejamento de Transportes and GEIPOT. Research on the interrelationship between costs of highway construction, maintenance and utilization. Study 7. Brasilia: Ministerio dos Transportes. 1981.