Cita APA (7a ed.)

Billings, H. (1990). Magic and Hypersystems: A New Orderliness for Libraries.

Cita Chicago Style (17a ed.)

Billings, Harold. Magic and Hypersystems: A New Orderliness for Libraries. 1990.

Cita MLA (9a ed.)

Billings, Harold. Magic and Hypersystems: A New Orderliness for Libraries. 1990.

Precaución: Estas citas no son 100% exactas.