Cita APA (7a ed.)

American Library Association & American Library Association. (1992). Purchasing an encyclopedia: 12 points to consider (4th ed.). Booklist, American Library Association.

Cita Chicago Style (17a ed.)

American Library Association y American Library Association. Purchasing an Encyclopedia: 12 Points to Consider. 4th ed. Chicago, IL: Booklist, American Library Association, 1992.

Cita MLA (9a ed.)

American Library Association y American Library Association. Purchasing an Encyclopedia: 12 Points to Consider. 4th ed. Booklist, American Library Association, 1992.