Cita APA (7th ed.)

Vietnam. Directorate General of Planning. (1972). Four-year national economic development plan: 1972-1975. Directorate General of Planning.

Cita Chicago (17th ed.)

Vietnam. Directorate General of Planning. Four-year National Economic Development Plan: 1972-1975. Saigo: Directorate General of Planning, 1972.

Cita MLA (9th ed.)

Vietnam. Directorate General of Planning. Four-year National Economic Development Plan: 1972-1975. Directorate General of Planning, 1972.