Cita APA (7a ed.)

Orvedal, A. C. (1977). Bibliography of soils of the tropics: V.2: Tropics in general and Souath América. Agency for International Development; Technical Assistance Bureau.

Cita Chicago Style (17a ed.)

Orvedal, Arnold C. Bibliography of Soils of the Tropics: V.2: Tropics in General and Souath América. Washington, DC: Agency for International Development; Technical Assistance Bureau, 1977.

Cita MLA (8a ed.)

Orvedal, Arnold C. Bibliography of Soils of the Tropics: V.2: Tropics in General and Souath América. Agency for International Development; Technical Assistance Bureau, 1977.