Cita APA (7a ed.)

-. (1983). Grolier academic encyclopedia 9. Grolier Internasional.

Cita Chicago Style (17a ed.)

-. Grolier Academic Encyclopedia 9. (sl): Grolier Internasional, 1983.

Cita MLA (9a ed.)

-. Grolier Academic Encyclopedia 9. Grolier Internasional, 1983.