Bibliography Help about two citations from the same encyclopedia?

Question

Well, I have two different citations from the same encyclopedia.

How would I write the in-text parenthetic citation?

And how would I write the bibliography for them?

Would I have to write the bibliography twice?

Are these correct: (the complete citation noted twice in those formats in the Bib.)?

(500, National Socialism)

"National Socialism," The Columbia Encyclopedia, Sixth Ed.: Columbia University Press, 2004.

(790, World War II)

“World War II” The Columbia Encyclopedia. Sixth Ed.: Columbia University Press, 2004

Answer 1

You don't specify which citation format you are using, but it appears to be MLA. If that is the case, the parenthetical reference within the paper should contain the author's last name, followed by the page number. In addition, according to my Wadsworth Handbook, the citation itself appears correct as you have it noted.