Rothstein, S. (1989). Reference Service: The New Dimension in Librarianship.
Cita Chicago Style (17a ed.)Rothstein, Samuel. Reference Service: The New Dimension in Librarianship. 1989.
Cita MLA (9a ed.)Rothstein, Samuel. Reference Service: The New Dimension in Librarianship. 1989.
Precaución: Estas citas no son 100% exactas.