Cita APA (7a ed.)

Berry, R. A. (1974). Factor proportions and urban employment in developing countries. International Labour Organization.

Cita Chicago Style (17a ed.)

Berry, R. Albert. Factor Proportions and Urban Employment in Developing Countries. International Labour Organization, 1974.

Cita MLA (9a ed.)

Berry, R. Albert. Factor Proportions and Urban Employment in Developing Countries. International Labour Organization, 1974.