Atherton, P., & Christian, R. W. (1977). Librarians and online services. Knowledge Industry.
Cita Chicago Style (17a ed.)Atherton, Pauline, y Roger W. Christian. Librarians and Online Services. White Plains, N. Y: Knowledge Industry, 1977.
Cita MLA (9a ed.)Atherton, Pauline, y Roger W. Christian. Librarians and Online Services. Knowledge Industry, 1977.
Precaución: Estas citas no son 100% exactas.