Ellis, D. (2009). Becoming a master student concise (12th ed.). Houghton Mifflin Harcourt Pub. Company.
Lua i Stíl Chicago (17ú heag.)Ellis, Dave. Becoming a Master Student Concise. 12th ed. Boston, Mass: Houghton Mifflin Harcourt Pub. Company, 2009.
Lua MLA (9ú heag.)Ellis, Dave. Becoming a Master Student Concise. 12th ed. Houghton Mifflin Harcourt Pub. Company, 2009.
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