Cita APA (7a ed.)
American Library Association & Reference and Subscription Books Review Committee. (1969). Purchasing a general encyclopedia. American Library Comm.
Cita Chicago Style (17a ed.)
American Library Association y Reference and Subscription Books Review Committee. Purchasing a General Encyclopedia. Rochester: American Library Comm, 1969.
Cita MLA (9a ed.)
American Library Association y Reference and Subscription Books Review Committee. Purchasing a General Encyclopedia. American Library Comm, 1969.
Precaución: Estas citas no son 100% exactas.