Ed Cray and Marilyn Eisenberg Herzog. The Absurd Elephant: A Recent Riddle Fad (англ.) // Western Folklore[англ.] : journal. — Western States Folklore Society, 1967. — January (vol. 26, no. 1). — P. 27—36. — doi:10.2307/1498485. — JSTOR1498485.
jstor.org
Ed Cray and Marilyn Eisenberg Herzog. The Absurd Elephant: A Recent Riddle Fad (англ.) // Western Folklore[англ.] : journal. — Western States Folklore Society, 1967. — January (vol. 26, no. 1). — P. 27—36. — doi:10.2307/1498485. — JSTOR1498485.
wikipedia.org
en.wikipedia.org
Ed Cray and Marilyn Eisenberg Herzog. The Absurd Elephant: A Recent Riddle Fad (англ.) // Western Folklore[англ.] : journal. — Western States Folklore Society, 1967. — January (vol. 26, no. 1). — P. 27—36. — doi:10.2307/1498485. — JSTOR1498485.