Anton Krügel, Herbert Rascko (1998):
Mexico / Halbinsel Yukatan,
Höhlenkundliches Reisetagebuch Band 5, 71 pp 30 B&W and 23 colour plates, 5 A3 maps, figs etc. SB
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A handy travel guide to the caves and cenotes of the area.
John Noble, Susan Forsyth, Allison Wright, Andrew Dean Nystrom, Morgan Konn, Ben Greensfelder (2002):
Lonely Planet Mexico,
paperback, 1120 pp, Lonely Planet Publications; 8th edition (September 1, 2002), ISBN: 1740590287. amazon.com
Carl Franz, Lorena Havens, Steve Rogers (2002):
The People's Guide to Mexico,
paperback, 600 pp, Avalon Travel Publishing; 30th Annv edition (2002), ISBN: 1566914345 amazon.com
John L Stephens (1969):
Incidents of Travel in Central America, Chiapas and Yucatan in two volumes,
New York, Dover Publications Inc.