Gaver, M. V. (1971). Services of secondary school media centers: Evaluation and development. American Library Association.
Cita Chicago (17th ed.)Gaver, Mary Virginia. Services of Secondary School Media Centers: Evaluation and Development. Chicago: American Library Association, 1971.
Cita MLA (9th ed.)Gaver, Mary Virginia. Services of Secondary School Media Centers: Evaluation and Development. American Library Association, 1971.
Atenció: Aquestes cites poden no estar 100% correctes.