Grolier International. (1987). Grolier Academic Encyclopedia. Grolier International,Academic American.
Cita Chicago Style (17a ed.)Grolier International. Grolier Academic Encyclopedia. USA: Grolier International,Academic American, 1987.
Cita MLA (9a ed.)Grolier International. Grolier Academic Encyclopedia. Grolier International,Academic American, 1987.
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