Cita APA (7a ed.)
Whitlatch, J. B. Evaluating Reference Services: A Practical Guide. American Library Association.
Cita estilo Chicago (17a ed.)
Whitlatch, Jo Bell. Evaluating Reference Services: A Practical Guide. Chicago, EUA: American Library Association.
Cita MLA (9a ed.)
Whitlatch, Jo Bell. Evaluating Reference Services: A Practical Guide. American Library Association.
Precaución: Estas citas no son 100% exactas.