Lua APA (7ú heag.)

EDUCATIONAL TESTING SERVICE. (2002). GRADUATE RECORD EXAMINATIONS (GRE). EDUCATIONAL TESTING SERVICE.

Lua i Stíl Chicago (17ú heag.)

EDUCATIONAL TESTING SERVICE. GRADUATE RECORD EXAMINATIONS (GRE). NEW JERSEY: EDUCATIONAL TESTING SERVICE, 2002.

Lua MLA (9ú heag.)

EDUCATIONAL TESTING SERVICE. GRADUATE RECORD EXAMINATIONS (GRE). EDUCATIONAL TESTING SERVICE, 2002.

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