APA-viite (7. p.)
Billings, H. (2002). Magic and hypersystems: Constructing the information-sharing library. American Library Assoc.
Chicago-viite (17. p.)
Billings, Harold. Magic and Hypersystems: Constructing the Information-sharing Library. Chicago: American Library Assoc, 2002.
MLA-viite (9. p.)
Billings, Harold. Magic and Hypersystems: Constructing the Information-sharing Library. American Library Assoc, 2002.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.