Cita APA (7a ed.)

Barnett, S. A., & Piggford, R. R. (1969). Manual on Book and Library Activities in Developing Countries. Agency for international development.

Cita Chicago Style (17a ed.)

Barnett, Stanley A., y Roland R. Piggford. Manual on Book and Library Activities in Developing Countries. New York: Agency for international development, 1969.

Cita MLA (9a ed.)

Barnett, Stanley A., y Roland R. Piggford. Manual on Book and Library Activities in Developing Countries. Agency for international development, 1969.