APA (7th ed.) Citation

GROLIER ENCYCLOPEDIA .. & GROLIER. Grolier encyclopedia of knowledge 18. Grolier.

Chicago Style (17th ed.) Citation

GROLIER ENCYCLOPEDIA .. and GROLIER. Grolier Encyclopedia of Knowledge 18. Danbury: Grolier.

MLA (9th ed.) Citation

GROLIER ENCYCLOPEDIA .. and GROLIER. Grolier Encyclopedia of Knowledge 18. Grolier.

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