By De Filippis, Michele.
Berkeley University of California Press 1967 .
208 p.

By Clarasó Noel..
Barcelona Ediciones Acervo 1972 .
856 p.

By Collis, Harry..
Lincolnwood, IL NTC Publishing Group 1996 .
ix, 125 p. , Includes index. 23 cm..

By Oliveras Janer, Oriol..
Madrid Editorial CCS 2003 .
155 p. 23 cm..
8483162857

By Pérez Polo , Francisco..
[Madrid] CCS 2001 .
135 p. 23 cm..
8483162857

By Hidalgo, Rafael..
Barcelona Octaedro 2005 .
228 p. 23 cm..
8480637099

By Gómez Yebra, Antonio A.
[Archidona, Málaga] Ediciones Aljibe 2002 .
119 p. 24 cm..
8497000692 | 9788497000697

By Villegas, Víctor.
Bogotá, Colombia San Pablo 1994 .
76 p. , On cover : 500 acertijos o adivinanzas 21 cm..
9586074854

By Marcano Sosa, Jacinto..
Puerto Rico [s.n.] 2009 .
2 v. , Cover title. 20cm..