-. (1983). Grolier academic encyclopedia 9. Grolier Internasional.
Citación estilo Chicago-. Grolier Academic Encyclopedia 9. (sl): Grolier Internasional, 1983.
Cita MLA-. Grolier Academic Encyclopedia 9. Grolier Internasional, 1983.
Warning: These citations may not always be 100% accurate.