Cita APA (7a ed.)

International Bureau of Education. (1974). Directory of Educational Documentation and Information services. [s.n.].

Cita Chicago Style (17a ed.)

International Bureau of Education. Directory of Educational Documentation and Information Services. [S.l.]: [s.n.], 1974.

Cita MLA (8a ed.)

International Bureau of Education. Directory of Educational Documentation and Information Services. [s.n.], 1974.