Cita APA (7th ed.)

Highsmith, R. M. (1963). Geography of Commodity production (2nd ed.). Oregon State univ..

Cita Chicago (17th ed.)

Highsmith, Richard M. Geography of Commodity Production. 2nd ed. Oregon: Oregon State univ., 1963.

Cita MLA (9th ed.)

Highsmith, Richard M. Geography of Commodity Production. 2nd ed. Oregon State univ., 1963.