Swift, D. G. (1983). Physics for rural development: A sourcebook for teachers and extension workers in developing countries. Wiley.
Cita Chicago (17th ed.)Swift, Digby G. Physics for Rural Development: A Sourcebook for Teachers and Extension Workers in Developing Countries. Chichester, Eng: Wiley, 1983.
Cita MLA (9th ed.)Swift, Digby G. Physics for Rural Development: A Sourcebook for Teachers and Extension Workers in Developing Countries. Wiley, 1983.
Atenció: Aquestes cites poden no estar 100% correctes.