Lua APA (7ú heag.)

Grolier Incorporated. (1997). The encyclopedia Americana (International ed.). Grolier Inc.

Lua i Stíl Chicago (17ú heag.)

Grolier Incorporated. The Encyclopedia Americana. International ed. Danbury, Conn: Grolier Inc, 1997.

Lua MLA (9ú heag.)

Grolier Incorporated. The Encyclopedia Americana. International ed. Grolier Inc, 1997.

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