^Colin Larkin The Encyclopedia of Popular Music 2006 Page 114
"In 1980, Febles played trumpet and wrote over half the arrangements on El Sabio, which was another Colon production job"
^Hispanic American Religious Cultures: A - M. - Volume 1 - Page 494 1598841394
2009 In Para Ochun (El Sabio, 1980), Puerto Rican salsa star He ́ctor Lavoe, whose drug addiction and depression once led him to seek the aid of a santero, sings of bringing flowers to the Queen's altar to seek her protection."
