Orben, R. (2000). Speaker's handbook of humor. Merriam-Webster.
Lua i Stíl Chicago (17ú heag.)Orben, Robert. Speaker's Handbook of Humor. Springfield, Mass: Merriam-Webster, 2000.
Lua MLA (9ú heag.)Orben, Robert. Speaker's Handbook of Humor. Merriam-Webster, 2000.
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