APA-ийн эшлэл(7 дахь хэвлэлт)

Gardner, M. (1987). Riddles of the sphinx and other mathematical puzzle tales. Mathematical Association of America.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Gardner, Martin. Riddles of the Sphinx and Other Mathematical Puzzle Tales. Washington, D.C.: Mathematical Association of America, 1987.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Gardner, Martin. Riddles of the Sphinx and Other Mathematical Puzzle Tales. Mathematical Association of America, 1987.