Cita APA (7a ed.)

McCarn, D. B., & Slamecka, V. (1979). The Information resources and services of the United States: An introduction for developing countries. U.S. Department of State.

Cita Chicago Style (17a ed.)

McCarn, Davis B., y Vladimir Slamecka. The Information Resources and Services of the United States: An Introduction for Developing Countries. Washington, D.C: U.S. Department of State, 1979.

Cita MLA (9a ed.)

McCarn, Davis B., y Vladimir Slamecka. The Information Resources and Services of the United States: An Introduction for Developing Countries. U.S. Department of State, 1979.