Volunteers for International Technical Assistance. (1970). Village technology handbook ([2d ed. rev.].). College Campus.
Cita Chicago (17th ed.)Volunteers for International Technical Assistance. Village Technology Handbook. [2d ed. rev.]. Schenectady, N.Y.: College Campus, 1970.
Cita MLA (8th ed.)Volunteers for International Technical Assistance. Village Technology Handbook. [2d ed. rev.]. College Campus, 1970.
Atenció: Aquestes cites poden no estar 100% correctes.