Eternal enigmas: investigations into universal mysteries
London: Company Book, 1997,
 Buku Teks
Rahasia di kaki Borobudur = The Hidden foot of Borobudur
editor Rudy D. Badil, Nurhadi Rangkuti
Katalis, 1989
 Buku Teks
Rahasia di kaki Borobudur = The hidden foot of Borobudur
Rudi Badil ; Nurhadi Rangkuti, editor
Katalis, 1992
 Buku Referensi
Deurzen-Smith, Emmy Van
Everyday mysteries / Emmy van Deurzen-Smith
Routledge, 1997
 Buku Teks
Feder, Kenneth L., author
Frauds myths and mysteries : science and pseudoscience in archaeology
McGraw-Hill, 2011
 Buku Teks
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